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Finding the Fourth Proportional to 88,400.30, 132,406.05 and 86,456.30

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Solution

The fourth proportional to 88,400.30, 132,406.05 and 86,456.30 is: 129,494.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,400.30 : 132,406.05 = 86,456.30 : x
  2. Step 2: Convert to fraction form
    88,400.30/132,406.05 = 86,456.30/x
  3. Step 3: Cross multiply
    88,400.30x = 132,406.05 × 86,456.30
  4. Step 4: Simplify right side
    88,400.30x = 11,447,337,180.62
  5. Step 5: Solve for x
    x = 11,447,337,180.62/88,400.30
  6. Step 6: Final answer
    x = 129,494.33

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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.