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Finding the Fourth Proportional to 131,882.68, 181,998.12 and 71,453.72

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Solution

The fourth proportional to 131,882.68, 181,998.12 and 71,453.72 is: 98,606.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,882.68 : 181,998.12 = 71,453.72 : x
  2. Step 2: Convert to fraction form
    131,882.68/181,998.12 = 71,453.72/x
  3. Step 3: Cross multiply
    131,882.68x = 181,998.12 × 71,453.72
  4. Step 4: Simplify right side
    131,882.68x = 13,004,442,707.01
  5. Step 5: Solve for x
    x = 13,004,442,707.01/131,882.68
  6. Step 6: Final answer
    x = 98,606.15

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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.