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Finding the Fourth Proportional to 158,874.38, 219,245.79 and 86,276.64

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Solution

The fourth proportional to 158,874.38, 219,245.79 and 86,276.64 is: 119,061.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,874.38 : 219,245.79 = 86,276.64 : x
  2. Step 2: Convert to fraction form
    158,874.38/219,245.79 = 86,276.64/x
  3. Step 3: Cross multiply
    158,874.38x = 219,245.79 × 86,276.64
  4. Step 4: Simplify right side
    158,874.38x = 18,915,790,095.35
  5. Step 5: Solve for x
    x = 18,915,790,095.35/158,874.38
  6. Step 6: Final answer
    x = 119,061.30

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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.