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Finding the Fourth Proportional to 125,448.89, 173,114.39 and 75,175.61

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Solution

The fourth proportional to 125,448.89, 173,114.39 and 75,175.61 is: 103,739.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,448.89 : 173,114.39 = 75,175.61 : x
  2. Step 2: Convert to fraction form
    125,448.89/173,114.39 = 75,175.61/x
  3. Step 3: Cross multiply
    125,448.89x = 173,114.39 × 75,175.61
  4. Step 4: Simplify right side
    125,448.89x = 13,013,979,190.40
  5. Step 5: Solve for x
    x = 13,013,979,190.40/125,448.89
  6. Step 6: Final answer
    x = 103,739.30

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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.