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Finding the Fourth Proportional to 158,414.76, 218,558.52 and 90,382.88

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Solution

The fourth proportional to 158,414.76, 218,558.52 and 90,382.88 is: 124,697.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,414.76 : 218,558.52 = 90,382.88 : x
  2. Step 2: Convert to fraction form
    158,414.76/218,558.52 = 90,382.88/x
  3. Step 3: Cross multiply
    158,414.76x = 218,558.52 × 90,382.88
  4. Step 4: Simplify right side
    158,414.76x = 19,753,948,486.14
  5. Step 5: Solve for x
    x = 19,753,948,486.14/158,414.76
  6. Step 6: Final answer
    x = 124,697.65

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1.5x scale

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.