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Finding the Fourth Proportional to 138,550.60, 207,923.10 and 88,751.80

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Solution

The fourth proportional to 138,550.60, 207,923.10 and 88,751.80 is: 133,189.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,550.60 : 207,923.10 = 88,751.80 : x
  2. Step 2: Convert to fraction form
    138,550.60/207,923.10 = 88,751.80/x
  3. Step 3: Cross multiply
    138,550.60x = 207,923.10 × 88,751.80
  4. Step 4: Simplify right side
    138,550.60x = 18,453,549,386.58
  5. Step 5: Solve for x
    x = 18,453,549,386.58/138,550.60
  6. Step 6: Final answer
    x = 133,189.96

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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.