Home / 129,398.72-194,116.18-45,146.58

Finding the Fourth Proportional to 129,398.72, 194,116.18 and 45,146.58

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Solution

The fourth proportional to 129,398.72, 194,116.18 and 45,146.58 is: 67,726.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,398.72 : 194,116.18 = 45,146.58 : x
  2. Step 2: Convert to fraction form
    129,398.72/194,116.18 = 45,146.58/x
  3. Step 3: Cross multiply
    129,398.72x = 194,116.18 × 45,146.58
  4. Step 4: Simplify right side
    129,398.72x = 8,763,681,649.66
  5. Step 5: Solve for x
    x = 8,763,681,649.66/129,398.72
  6. Step 6: Final answer
    x = 67,726.19

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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.