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Finding the Fourth Proportional to 88,221.20, 132,331.80 and 53,142.80

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Solution

The fourth proportional to 88,221.20, 132,331.80 and 53,142.80 is: 79,714.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,221.20 : 132,331.80 = 53,142.80 : x
  2. Step 2: Convert to fraction form
    88,221.20/132,331.80 = 53,142.80/x
  3. Step 3: Cross multiply
    88,221.20x = 132,331.80 × 53,142.80
  4. Step 4: Simplify right side
    88,221.20x = 7,032,482,381.04
  5. Step 5: Solve for x
    x = 7,032,482,381.04/88,221.20
  6. Step 6: Final answer
    x = 79,714.20

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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.