Home / 158,306.96-218,463.60-86,691.36

Finding the Fourth Proportional to 158,306.96, 218,463.60 and 86,691.36

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Solution

The fourth proportional to 158,306.96, 218,463.60 and 86,691.36 is: 119,634.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,306.96 : 218,463.60 = 86,691.36 : x
  2. Step 2: Convert to fraction form
    158,306.96/218,463.60 = 86,691.36/x
  3. Step 3: Cross multiply
    158,306.96x = 218,463.60 × 86,691.36
  4. Step 4: Simplify right side
    158,306.96x = 18,938,906,594.50
  5. Step 5: Solve for x
    x = 18,938,906,594.50/158,306.96
  6. Step 6: Final answer
    x = 119,634.07

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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.