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Finding the Fourth Proportional to 185,819.12, 278,728.80 and 67,490.24

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Solution

The fourth proportional to 185,819.12, 278,728.80 and 67,490.24 is: 101,235.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,819.12 : 278,728.80 = 67,490.24 : x
  2. Step 2: Convert to fraction form
    185,819.12/278,728.80 = 67,490.24/x
  3. Step 3: Cross multiply
    185,819.12x = 278,728.80 × 67,490.24
  4. Step 4: Simplify right side
    185,819.12x = 18,811,473,606.91
  5. Step 5: Solve for x
    x = 18,811,473,606.91/185,819.12
  6. Step 6: Final answer
    x = 101,235.40

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1.5x scale

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.