Home / 158,245.43-218,381.09-86,632.11

Finding the Fourth Proportional to 158,245.43, 218,381.09 and 86,632.11

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Solution

The fourth proportional to 158,245.43, 218,381.09 and 86,632.11 is: 119,553.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,245.43 : 218,381.09 = 86,632.11 : x
  2. Step 2: Convert to fraction form
    158,245.43/218,381.09 = 86,632.11/x
  3. Step 3: Cross multiply
    158,245.43x = 218,381.09 × 86,632.11
  4. Step 4: Simplify right side
    158,245.43x = 18,918,814,610.80
  5. Step 5: Solve for x
    x = 18,918,814,610.80/158,245.43
  6. Step 6: Final answer
    x = 119,553.62

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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.