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Finding the Fourth Proportional to 145,189.92, 217,764.08 and 45,326.88

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Solution

The fourth proportional to 145,189.92, 217,764.08 and 45,326.88 is: 67,983.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,189.92 : 217,764.08 = 45,326.88 : x
  2. Step 2: Convert to fraction form
    145,189.92/217,764.08 = 45,326.88/x
  3. Step 3: Cross multiply
    145,189.92x = 217,764.08 × 45,326.88
  4. Step 4: Simplify right side
    145,189.92x = 9,870,566,322.47
  5. Step 5: Solve for x
    x = 9,870,566,322.47/145,189.92
  6. Step 6: Final answer
    x = 67,983.83

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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.