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Finding the Fourth Proportional to 139,937.70, 209,906.55 and 132,356.10

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Solution

The fourth proportional to 139,937.70, 209,906.55 and 132,356.10 is: 198,534.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,937.70 : 209,906.55 = 132,356.10 : x
  2. Step 2: Convert to fraction form
    139,937.70/209,906.55 = 132,356.10/x
  3. Step 3: Cross multiply
    139,937.70x = 209,906.55 × 132,356.10
  4. Step 4: Simplify right side
    139,937.70x = 27,782,412,322.46
  5. Step 5: Solve for x
    x = 27,782,412,322.46/139,937.70
  6. Step 6: Final answer
    x = 198,534.15

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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.