Home / 156,278.20-215,653.28-88,298.04

Finding the Fourth Proportional to 156,278.20, 215,653.28 and 88,298.04

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Solution

The fourth proportional to 156,278.20, 215,653.28 and 88,298.04 is: 121,845.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,278.20 : 215,653.28 = 88,298.04 : x
  2. Step 2: Convert to fraction form
    156,278.20/215,653.28 = 88,298.04/x
  3. Step 3: Cross multiply
    156,278.20x = 215,653.28 × 88,298.04
  4. Step 4: Simplify right side
    156,278.20x = 19,041,761,943.57
  5. Step 5: Solve for x
    x = 19,041,761,943.57/156,278.20
  6. Step 6: Final answer
    x = 121,845.29

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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.