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Finding the Fourth Proportional to 121,531.20, 182,296.80 and 88,483.20

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Solution

The fourth proportional to 121,531.20, 182,296.80 and 88,483.20 is: 132,724.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,531.20 : 182,296.80 = 88,483.20 : x
  2. Step 2: Convert to fraction form
    121,531.20/182,296.80 = 88,483.20/x
  3. Step 3: Cross multiply
    121,531.20x = 182,296.80 × 88,483.20
  4. Step 4: Simplify right side
    121,531.20x = 16,130,204,213.76
  5. Step 5: Solve for x
    x = 16,130,204,213.76/121,531.20
  6. Step 6: Final answer
    x = 132,724.80

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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.