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Finding the Fourth Proportional to 139,414.64, 209,090.60 and 39,572.68

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Solution

The fourth proportional to 139,414.64, 209,090.60 and 39,572.68 is: 59,350.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,414.64 : 209,090.60 = 39,572.68 : x
  2. Step 2: Convert to fraction form
    139,414.64/209,090.60 = 39,572.68/x
  3. Step 3: Cross multiply
    139,414.64x = 209,090.60 × 39,572.68
  4. Step 4: Simplify right side
    139,414.64x = 8,274,275,404.81
  5. Step 5: Solve for x
    x = 8,274,275,404.81/139,414.64
  6. Step 6: Final answer
    x = 59,350.12

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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.