Home / 101,869.96-152,964.88-86,279.38

Finding the Fourth Proportional to 101,869.96, 152,964.88 and 86,279.38

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Solution

The fourth proportional to 101,869.96, 152,964.88 and 86,279.38 is: 129,554.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,869.96 : 152,964.88 = 86,279.38 : x
  2. Step 2: Convert to fraction form
    101,869.96/152,964.88 = 86,279.38/x
  3. Step 3: Cross multiply
    101,869.96x = 152,964.88 × 86,279.38
  4. Step 4: Simplify right side
    101,869.96x = 13,197,715,008.17
  5. Step 5: Solve for x
    x = 13,197,715,008.17/101,869.96
  6. Step 6: Final answer
    x = 129,554.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.