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Finding the Fourth Proportional to 121,508.32, 182,499.02 and 99,035.61

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Solution

The fourth proportional to 121,508.32, 182,499.02 and 99,035.61 is: 148,746.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,508.32 : 182,499.02 = 99,035.61 : x
  2. Step 2: Convert to fraction form
    121,508.32/182,499.02 = 99,035.61/x
  3. Step 3: Cross multiply
    121,508.32x = 182,499.02 × 99,035.61
  4. Step 4: Simplify right side
    121,508.32x = 18,073,901,770.10
  5. Step 5: Solve for x
    x = 18,073,901,770.10/121,508.32
  6. Step 6: Final answer
    x = 148,746.21

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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.