Home / 78,732,117.20-118,098,175.80-71,551,758.80

Finding the Fourth Proportional to 78,732,117.20, 118,098,175.80 and 71,551,758.80

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Solution

The fourth proportional to 78,732,117.20, 118,098,175.80 and 71,551,758.80 is: 107,327,638.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732,117.20 : 118,098,175.80 = 71,551,758.80 : x
  2. Step 2: Convert to fraction form
    78,732,117.20/118,098,175.80 = 71,551,758.80/x
  3. Step 3: Cross multiply
    78,732,117.20x = 118,098,175.80 × 71,551,758.80
  4. Step 4: Simplify right side
    78,732,117.20x = 8,450,132,189,561,596
  5. Step 5: Solve for x
    x = 8,450,132,189,561,596/78,732,117.20
  6. Step 6: Final answer
    x = 107,327,638.20

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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.