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Finding the Fourth Proportional to 145,162.56, 217,743.76 and 45,331.31

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Solution

The fourth proportional to 145,162.56, 217,743.76 and 45,331.31 is: 67,996.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,162.56 : 217,743.76 = 45,331.31 : x
  2. Step 2: Convert to fraction form
    145,162.56/217,743.76 = 45,331.31/x
  3. Step 3: Cross multiply
    145,162.56x = 217,743.76 × 45,331.31
  4. Step 4: Simplify right side
    145,162.56x = 9,870,609,471.92
  5. Step 5: Solve for x
    x = 9,870,609,471.92/145,162.56
  6. Step 6: Final answer
    x = 67,996.94

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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.