Home / 125,128.50-172,677.42-68,540.10

Finding the Fourth Proportional to 125,128.50, 172,677.42 and 68,540.10

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Solution

The fourth proportional to 125,128.50, 172,677.42 and 68,540.10 is: 94,585.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,128.50 : 172,677.42 = 68,540.10 : x
  2. Step 2: Convert to fraction form
    125,128.50/172,677.42 = 68,540.10/x
  3. Step 3: Cross multiply
    125,128.50x = 172,677.42 × 68,540.10
  4. Step 4: Simplify right side
    125,128.50x = 11,835,327,634.54
  5. Step 5: Solve for x
    x = 11,835,327,634.54/125,128.50
  6. Step 6: Final answer
    x = 94,585.39

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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.