Home / 131,990.35-182,049.89-86,651.79

Finding the Fourth Proportional to 131,990.35, 182,049.89 and 86,651.79

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Solution

The fourth proportional to 131,990.35, 182,049.89 and 86,651.79 is: 119,515.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,990.35 : 182,049.89 = 86,651.79 : x
  2. Step 2: Convert to fraction form
    131,990.35/182,049.89 = 86,651.79/x
  3. Step 3: Cross multiply
    131,990.35x = 182,049.89 × 86,651.79
  4. Step 4: Simplify right side
    131,990.35x = 15,774,948,837.80
  5. Step 5: Solve for x
    x = 15,774,948,837.80/131,990.35
  6. Step 6: Final answer
    x = 119,515.93

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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.