Home / 12,145,232,155.20-18,217,848,232.80-7,243,440,820.80

Finding the Fourth Proportional to 12,145,232,155.20, 18,217,848,232.80 and 7,243,440,820.80

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Solution

The fourth proportional to 12,145,232,155.20, 18,217,848,232.80 and 7,243,440,820.80 is: 10,865,161,231.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,145,232,155.20 : 18,217,848,232.80 = 7,243,440,820.80 : x
  2. Step 2: Convert to fraction form
    12,145,232,155.20/18,217,848,232.80 = 7,243,440,820.80/x
  3. Step 3: Cross multiply
    12,145,232,155.20x = 18,217,848,232.80 × 7,243,440,820.80
  4. Step 4: Simplify right side
    12,145,232,155.20x = 131,959,905,556,602,667,008
  5. Step 5: Solve for x
    x = 131,959,905,556,602,667,008/12,145,232,155.20
  6. Step 6: Final answer
    x = 10,865,161,231.20

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.