Home / 156,108.16-215,371.28-102,423.04

Finding the Fourth Proportional to 156,108.16, 215,371.28 and 102,423.04

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Solution

The fourth proportional to 156,108.16, 215,371.28 and 102,423.04 is: 141,305.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,108.16 : 215,371.28 = 102,423.04 : x
  2. Step 2: Convert to fraction form
    156,108.16/215,371.28 = 102,423.04/x
  3. Step 3: Cross multiply
    156,108.16x = 215,371.28 × 102,423.04
  4. Step 4: Simplify right side
    156,108.16x = 22,058,981,226.29
  5. Step 5: Solve for x
    x = 22,058,981,226.29/156,108.16
  6. Step 6: Final answer
    x = 141,305.75

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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.