Home / 156,286.48-215,686.92-88,311.28

Finding the Fourth Proportional to 156,286.48, 215,686.92 and 88,311.28

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Solution

The fourth proportional to 156,286.48, 215,686.92 and 88,311.28 is: 121,876.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,286.48 : 215,686.92 = 88,311.28 : x
  2. Step 2: Convert to fraction form
    156,286.48/215,686.92 = 88,311.28/x
  3. Step 3: Cross multiply
    156,286.48x = 215,686.92 × 88,311.28
  4. Step 4: Simplify right side
    156,286.48x = 19,047,587,984.46
  5. Step 5: Solve for x
    x = 19,047,587,984.46/156,286.48
  6. Step 6: Final answer
    x = 121,876.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.