Home / 88,078.10-132,117.15-86,911.70

Finding the Fourth Proportional to 88,078.10, 132,117.15 and 86,911.70

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Solution

The fourth proportional to 88,078.10, 132,117.15 and 86,911.70 is: 130,367.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,078.10 : 132,117.15 = 86,911.70 : x
  2. Step 2: Convert to fraction form
    88,078.10/132,117.15 = 86,911.70/x
  3. Step 3: Cross multiply
    88,078.10x = 132,117.15 × 86,911.70
  4. Step 4: Simplify right side
    88,078.10x = 11,482,526,105.66
  5. Step 5: Solve for x
    x = 11,482,526,105.66/88,078.10
  6. Step 6: Final answer
    x = 130,367.55

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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.