Home / 145,161,012.40-217,741,518.60-83,939,009.20

Finding the Fourth Proportional to 145,161,012.40, 217,741,518.60 and 83,939,009.20

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Solution

The fourth proportional to 145,161,012.40, 217,741,518.60 and 83,939,009.20 is: 125,908,513.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,161,012.40 : 217,741,518.60 = 83,939,009.20 : x
  2. Step 2: Convert to fraction form
    145,161,012.40/217,741,518.60 = 83,939,009.20/x
  3. Step 3: Cross multiply
    145,161,012.40x = 217,741,518.60 × 83,939,009.20
  4. Step 4: Simplify right side
    145,161,012.40x = 18,277,007,332,987,372
  5. Step 5: Solve for x
    x = 18,277,007,332,987,372/145,161,012.40
  6. Step 6: Final answer
    x = 125,908,513.80

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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.