Home / 129,549.58-194,305.91-40,800.78

Finding the Fourth Proportional to 129,549.58, 194,305.91 and 40,800.78

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Solution

The fourth proportional to 129,549.58, 194,305.91 and 40,800.78 is: 61,195.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,549.58 : 194,305.91 = 40,800.78 : x
  2. Step 2: Convert to fraction form
    129,549.58/194,305.91 = 40,800.78/x
  3. Step 3: Cross multiply
    129,549.58x = 194,305.91 × 40,800.78
  4. Step 4: Simplify right side
    129,549.58x = 7,927,832,686.61
  5. Step 5: Solve for x
    x = 7,927,832,686.61/129,549.58
  6. Step 6: Final answer
    x = 61,195.36

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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.