Home / 120,020,147.28-165,628,310.76-65,016,003.78

Finding the Fourth Proportional to 120,020,147.28, 165,628,310.76 and 65,016,003.78

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Solution

The fourth proportional to 120,020,147.28, 165,628,310.76 and 65,016,003.78 is: 89,722,360.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,020,147.28 : 165,628,310.76 = 65,016,003.78 : x
  2. Step 2: Convert to fraction form
    120,020,147.28/165,628,310.76 = 65,016,003.78/x
  3. Step 3: Cross multiply
    120,020,147.28x = 165,628,310.76 × 65,016,003.78
  4. Step 4: Simplify right side
    120,020,147.28x = 10,768,490,878,447,174
  5. Step 5: Solve for x
    x = 10,768,490,878,447,174/120,020,147.28
  6. Step 6: Final answer
    x = 89,722,360.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.