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Finding the Fourth Proportional to 123,894,409.60, 185,841,614.40 and 66,498,781.60

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Solution

The fourth proportional to 123,894,409.60, 185,841,614.40 and 66,498,781.60 is: 99,748,172.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,894,409.60 : 185,841,614.40 = 66,498,781.60 : x
  2. Step 2: Convert to fraction form
    123,894,409.60/185,841,614.40 = 66,498,781.60/x
  3. Step 3: Cross multiply
    123,894,409.60x = 185,841,614.40 × 66,498,781.60
  4. Step 4: Simplify right side
    123,894,409.60x = 12,358,240,928,177,016
  5. Step 5: Solve for x
    x = 12,358,240,928,177,016/123,894,409.60
  6. Step 6: Final answer
    x = 99,748,172.40

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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.