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Finding the Fourth Proportional to 119,843.16, 179,624.76 and 90,165.64

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Solution

The fourth proportional to 119,843.16, 179,624.76 and 90,165.64 is: 135,143.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,843.16 : 179,624.76 = 90,165.64 : x
  2. Step 2: Convert to fraction form
    119,843.16/179,624.76 = 90,165.64/x
  3. Step 3: Cross multiply
    119,843.16x = 179,624.76 × 90,165.64
  4. Step 4: Simplify right side
    119,843.16x = 16,195,981,445.25
  5. Step 5: Solve for x
    x = 16,195,981,445.25/119,843.16
  6. Step 6: Final answer
    x = 135,143.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.