Home / 125,129.75-172,679.10-68,543.15

Finding the Fourth Proportional to 125,129.75, 172,679.10 and 68,543.15

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Solution

The fourth proportional to 125,129.75, 172,679.10 and 68,543.15 is: 94,589.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,129.75 : 172,679.10 = 68,543.15 : x
  2. Step 2: Convert to fraction form
    125,129.75/172,679.10 = 68,543.15/x
  3. Step 3: Cross multiply
    125,129.75x = 172,679.10 × 68,543.15
  4. Step 4: Simplify right side
    125,129.75x = 11,835,969,453.17
  5. Step 5: Solve for x
    x = 11,835,969,453.17/125,129.75
  6. Step 6: Final answer
    x = 94,589.57

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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.