Home / 131,872.61-181,983.99-71,444.79

Finding the Fourth Proportional to 131,872.61, 181,983.99 and 71,444.79

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Solution

The fourth proportional to 131,872.61, 181,983.99 and 71,444.79 is: 98,593.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,872.61 : 181,983.99 = 71,444.79 : x
  2. Step 2: Convert to fraction form
    131,872.61/181,983.99 = 71,444.79/x
  3. Step 3: Cross multiply
    131,872.61x = 181,983.99 × 71,444.79
  4. Step 4: Simplify right side
    131,872.61x = 13,001,807,948.91
  5. Step 5: Solve for x
    x = 13,001,807,948.91/131,872.61
  6. Step 6: Final answer
    x = 98,593.69

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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.