Home / 156,422.08-215,805.90-102,736.18

Finding the Fourth Proportional to 156,422.08, 215,805.90 and 102,736.18

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Solution

The fourth proportional to 156,422.08, 215,805.90 and 102,736.18 is: 141,738.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,422.08 : 215,805.90 = 102,736.18 : x
  2. Step 2: Convert to fraction form
    156,422.08/215,805.90 = 102,736.18/x
  3. Step 3: Cross multiply
    156,422.08x = 215,805.90 × 102,736.18
  4. Step 4: Simplify right side
    156,422.08x = 22,171,073,787.46
  5. Step 5: Solve for x
    x = 22,171,073,787.46/156,422.08
  6. Step 6: Final answer
    x = 141,738.77

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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.