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Finding the Fourth Proportional to 108,471.60, 149,708.72 and 74,452.14

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Solution

The fourth proportional to 108,471.60, 149,708.72 and 74,452.14 is: 102,756.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,471.60 : 149,708.72 = 74,452.14 : x
  2. Step 2: Convert to fraction form
    108,471.60/149,708.72 = 74,452.14/x
  3. Step 3: Cross multiply
    108,471.60x = 149,708.72 × 74,452.14
  4. Step 4: Simplify right side
    108,471.60x = 11,146,134,766.79
  5. Step 5: Solve for x
    x = 11,146,134,766.79/108,471.60
  6. Step 6: Final answer
    x = 102,756.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.