Home / 158,347.38-218,519.46-86,731.95

Finding the Fourth Proportional to 158,347.38, 218,519.46 and 86,731.95

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Solution

The fourth proportional to 158,347.38, 218,519.46 and 86,731.95 is: 119,690.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,347.38 : 218,519.46 = 86,731.95 : x
  2. Step 2: Convert to fraction form
    158,347.38/218,519.46 = 86,731.95/x
  3. Step 3: Cross multiply
    158,347.38x = 218,519.46 × 86,731.95
  4. Step 4: Simplify right side
    158,347.38x = 18,952,618,878.75
  5. Step 5: Solve for x
    x = 18,952,618,878.75/158,347.38
  6. Step 6: Final answer
    x = 119,690.13

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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.