Home / 238,538.75-329,186.03-129,643.11

Finding the Fourth Proportional to 238,538.75, 329,186.03 and 129,643.11

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Solution

The fourth proportional to 238,538.75, 329,186.03 and 129,643.11 is: 178,908.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,538.75 : 329,186.03 = 129,643.11 : x
  2. Step 2: Convert to fraction form
    238,538.75/329,186.03 = 129,643.11/x
  3. Step 3: Cross multiply
    238,538.75x = 329,186.03 × 129,643.11
  4. Step 4: Simplify right side
    238,538.75x = 42,676,699,123.70
  5. Step 5: Solve for x
    x = 42,676,699,123.70/238,538.75
  6. Step 6: Final answer
    x = 178,908.88

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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.