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Finding the Fourth Proportional to 121,695.20, 182,542.80 and 88,258.40

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Solution

The fourth proportional to 121,695.20, 182,542.80 and 88,258.40 is: 132,387.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,695.20 : 182,542.80 = 88,258.40 : x
  2. Step 2: Convert to fraction form
    121,695.20/182,542.80 = 88,258.40/x
  3. Step 3: Cross multiply
    121,695.20x = 182,542.80 × 88,258.40
  4. Step 4: Simplify right side
    121,695.20x = 16,110,935,459.52
  5. Step 5: Solve for x
    x = 16,110,935,459.52/121,695.20
  6. Step 6: Final answer
    x = 132,387.60

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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.