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Finding the Fourth Proportional to 139,444.39, 209,129.05 and 60,540.13

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Solution

The fourth proportional to 139,444.39, 209,129.05 and 60,540.13 is: 90,793.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,444.39 : 209,129.05 = 60,540.13 : x
  2. Step 2: Convert to fraction form
    139,444.39/209,129.05 = 60,540.13/x
  3. Step 3: Cross multiply
    139,444.39x = 209,129.05 × 60,540.13
  4. Step 4: Simplify right side
    139,444.39x = 12,660,699,873.78
  5. Step 5: Solve for x
    x = 12,660,699,873.78/139,444.39
  6. Step 6: Final answer
    x = 90,793.90

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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.