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Finding the Fourth Proportional to 121,103.60, 181,482.60 and 89,265.20

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Solution

The fourth proportional to 121,103.60, 181,482.60 and 89,265.20 is: 133,770.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,103.60 : 181,482.60 = 89,265.20 : x
  2. Step 2: Convert to fraction form
    121,103.60/181,482.60 = 89,265.20/x
  3. Step 3: Cross multiply
    121,103.60x = 181,482.60 × 89,265.20
  4. Step 4: Simplify right side
    121,103.60x = 16,200,080,585.52
  5. Step 5: Solve for x
    x = 16,200,080,585.52/121,103.60
  6. Step 6: Final answer
    x = 133,770.43

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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.