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Finding the Fourth Proportional to 138,237.76, 207,390.70 and 44,743.50

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Solution

The fourth proportional to 138,237.76, 207,390.70 and 44,743.50 is: 67,126.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,237.76 : 207,390.70 = 44,743.50 : x
  2. Step 2: Convert to fraction form
    138,237.76/207,390.70 = 44,743.50/x
  3. Step 3: Cross multiply
    138,237.76x = 207,390.70 × 44,743.50
  4. Step 4: Simplify right side
    138,237.76x = 9,279,385,785.45
  5. Step 5: Solve for x
    x = 9,279,385,785.45/138,237.76
  6. Step 6: Final answer
    x = 67,126.27

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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.