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Finding the Fourth Proportional to 121,750.70, 182,691.45 and 59,421.20

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Solution

The fourth proportional to 121,750.70, 182,691.45 and 59,421.20 is: 89,163.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,750.70 : 182,691.45 = 59,421.20 : x
  2. Step 2: Convert to fraction form
    121,750.70/182,691.45 = 59,421.20/x
  3. Step 3: Cross multiply
    121,750.70x = 182,691.45 × 59,421.20
  4. Step 4: Simplify right side
    121,750.70x = 10,855,744,275.28
  5. Step 5: Solve for x
    x = 10,855,744,275.28/121,750.70
  6. Step 6: Final answer
    x = 89,163.72

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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.