Home / 158,537.30-218,780.61-86,920.34

Finding the Fourth Proportional to 158,537.30, 218,780.61 and 86,920.34

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Solution

The fourth proportional to 158,537.30, 218,780.61 and 86,920.34 is: 119,949.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,537.30 : 218,780.61 = 86,920.34 : x
  2. Step 2: Convert to fraction form
    158,537.30/218,780.61 = 86,920.34/x
  3. Step 3: Cross multiply
    158,537.30x = 218,780.61 × 86,920.34
  4. Step 4: Simplify right side
    158,537.30x = 19,016,485,006.61
  5. Step 5: Solve for x
    x = 19,016,485,006.61/158,537.30
  6. Step 6: Final answer
    x = 119,949.60

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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.