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Finding the Fourth Proportional to 139,708.38, 209,472.36 and 59,798.52

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Solution

The fourth proportional to 139,708.38, 209,472.36 and 59,798.52 is: 89,659.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,708.38 : 209,472.36 = 59,798.52 : x
  2. Step 2: Convert to fraction form
    139,708.38/209,472.36 = 59,798.52/x
  3. Step 3: Cross multiply
    139,708.38x = 209,472.36 × 59,798.52
  4. Step 4: Simplify right side
    139,708.38x = 12,526,137,108.91
  5. Step 5: Solve for x
    x = 12,526,137,108.91/139,708.38
  6. Step 6: Final answer
    x = 89,659.17

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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.