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Finding the Fourth Proportional to 113,308.80, 169,979.40 and 38,432.40

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Solution

The fourth proportional to 113,308.80, 169,979.40 and 38,432.40 is: 57,654.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,308.80 : 169,979.40 = 38,432.40 : x
  2. Step 2: Convert to fraction form
    113,308.80/169,979.40 = 38,432.40/x
  3. Step 3: Cross multiply
    113,308.80x = 169,979.40 × 38,432.40
  4. Step 4: Simplify right side
    113,308.80x = 6,532,716,292.56
  5. Step 5: Solve for x
    x = 6,532,716,292.56/113,308.80
  6. Step 6: Final answer
    x = 57,654.09

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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.