Home / 78,732,136.30-118,098,204.45-72,514,276.60

Finding the Fourth Proportional to 78,732,136.30, 118,098,204.45 and 72,514,276.60

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Solution

The fourth proportional to 78,732,136.30, 118,098,204.45 and 72,514,276.60 is: 108,771,414.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732,136.30 : 118,098,204.45 = 72,514,276.60 : x
  2. Step 2: Convert to fraction form
    78,732,136.30/118,098,204.45 = 72,514,276.60/x
  3. Step 3: Cross multiply
    78,732,136.30x = 118,098,204.45 × 72,514,276.60
  4. Step 4: Simplify right side
    78,732,136.30x = 8,563,805,863,450,650
  5. Step 5: Solve for x
    x = 8,563,805,863,450,650/78,732,136.30
  6. Step 6: Final answer
    x = 108,771,414.90

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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.