Home / 78,732,136.80-118,098,205.20-72,514,277.10

Finding the Fourth Proportional to 78,732,136.80, 118,098,205.20 and 72,514,277.10

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Solution

The fourth proportional to 78,732,136.80, 118,098,205.20 and 72,514,277.10 is: 108,771,415.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732,136.80 : 118,098,205.20 = 72,514,277.10 : x
  2. Step 2: Convert to fraction form
    78,732,136.80/118,098,205.20 = 72,514,277.10/x
  3. Step 3: Cross multiply
    78,732,136.80x = 118,098,205.20 × 72,514,277.10
  4. Step 4: Simplify right side
    78,732,136.80x = 8,563,805,976,885,460
  5. Step 5: Solve for x
    x = 8,563,805,976,885,460/78,732,136.80
  6. Step 6: Final answer
    x = 108,771,415.65

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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.