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Finding the Fourth Proportional to 103,793,424.30, 155,690,136.45 and 65,572,829.10

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Solution

The fourth proportional to 103,793,424.30, 155,690,136.45 and 65,572,829.10 is: 98,359,243.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,793,424.30 : 155,690,136.45 = 65,572,829.10 : x
  2. Step 2: Convert to fraction form
    103,793,424.30/155,690,136.45 = 65,572,829.10/x
  3. Step 3: Cross multiply
    103,793,424.30x = 155,690,136.45 × 65,572,829.10
  4. Step 4: Simplify right side
    103,793,424.30x = 10,209,042,709,991,530
  5. Step 5: Solve for x
    x = 10,209,042,709,991,530/103,793,424.30
  6. Step 6: Final answer
    x = 98,359,243.65

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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.