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Finding the Fourth Proportional to 508,106.57, 762,160.14 and 129,055.73

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Solution

The fourth proportional to 508,106.57, 762,160.14 and 129,055.73 is: 193,583.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,106.57 : 762,160.14 = 129,055.73 : x
  2. Step 2: Convert to fraction form
    508,106.57/762,160.14 = 129,055.73/x
  3. Step 3: Cross multiply
    508,106.57x = 762,160.14 × 129,055.73
  4. Step 4: Simplify right side
    508,106.57x = 98,361,129,433.80
  5. Step 5: Solve for x
    x = 98,361,129,433.80/508,106.57
  6. Step 6: Final answer
    x = 193,583.66

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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.