Home / 78,732,136.90-118,098,205.35-72,992,574.10

Finding the Fourth Proportional to 78,732,136.90, 118,098,205.35 and 72,992,574.10

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Solution

The fourth proportional to 78,732,136.90, 118,098,205.35 and 72,992,574.10 is: 109,488,861.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732,136.90 : 118,098,205.35 = 72,992,574.10 : x
  2. Step 2: Convert to fraction form
    78,732,136.90/118,098,205.35 = 72,992,574.10/x
  3. Step 3: Cross multiply
    78,732,136.90x = 118,098,205.35 × 72,992,574.10
  4. Step 4: Simplify right side
    78,732,136.90x = 8,620,292,005,086,890
  5. Step 5: Solve for x
    x = 8,620,292,005,086,890/78,732,136.90
  6. Step 6: Final answer
    x = 109,488,861.15

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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.