Home / 125,003.40-172,508.81-68,414.78

Finding the Fourth Proportional to 125,003.40, 172,508.81 and 68,414.78

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Solution

The fourth proportional to 125,003.40, 172,508.81 and 68,414.78 is: 94,414.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,003.40 : 172,508.81 = 68,414.78 : x
  2. Step 2: Convert to fraction form
    125,003.40/172,508.81 = 68,414.78/x
  3. Step 3: Cross multiply
    125,003.40x = 172,508.81 × 68,414.78
  4. Step 4: Simplify right side
    125,003.40x = 11,802,151,980.30
  5. Step 5: Solve for x
    x = 11,802,151,980.30/125,003.40
  6. Step 6: Final answer
    x = 94,414.65

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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.