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Finding the Fourth Proportional to 138,289.92, 207,451.80 and 49,552.80

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Solution

The fourth proportional to 138,289.92, 207,451.80 and 49,552.80 is: 74,335.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,289.92 : 207,451.80 = 49,552.80 : x
  2. Step 2: Convert to fraction form
    138,289.92/207,451.80 = 49,552.80/x
  3. Step 3: Cross multiply
    138,289.92x = 207,451.80 × 49,552.80
  4. Step 4: Simplify right side
    138,289.92x = 10,279,817,555.04
  5. Step 5: Solve for x
    x = 10,279,817,555.04/138,289.92
  6. Step 6: Final answer
    x = 74,335.26

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1.5x scale

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.