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Finding the Fourth Proportional to 132,425.60, 198,619.20 and 38,921.60

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Solution

The fourth proportional to 132,425.60, 198,619.20 and 38,921.60 is: 58,376.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,425.60 : 198,619.20 = 38,921.60 : x
  2. Step 2: Convert to fraction form
    132,425.60/198,619.20 = 38,921.60/x
  3. Step 3: Cross multiply
    132,425.60x = 198,619.20 × 38,921.60
  4. Step 4: Simplify right side
    132,425.60x = 7,730,577,054.72
  5. Step 5: Solve for x
    x = 7,730,577,054.72/132,425.60
  6. Step 6: Final answer
    x = 58,376.76

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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.