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Finding the Fourth Proportional to 88,514.60, 132,771.90 and 85,015.40

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Solution

The fourth proportional to 88,514.60, 132,771.90 and 85,015.40 is: 127,523.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,514.60 : 132,771.90 = 85,015.40 : x
  2. Step 2: Convert to fraction form
    88,514.60/132,771.90 = 85,015.40/x
  3. Step 3: Cross multiply
    88,514.60x = 132,771.90 × 85,015.40
  4. Step 4: Simplify right side
    88,514.60x = 11,287,656,187.26
  5. Step 5: Solve for x
    x = 11,287,656,187.26/88,514.60
  6. Step 6: Final answer
    x = 127,523.10

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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.