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Finding the Fourth Proportional to 125,676, 173,433.24 and 69,087.78

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Solution

The fourth proportional to 125,676, 173,433.24 and 69,087.78 is: 95,341.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,676 : 173,433.24 = 69,087.78 : x
  2. Step 2: Convert to fraction form
    125,676/173,433.24 = 69,087.78/x
  3. Step 3: Cross multiply
    125,676x = 173,433.24 × 69,087.78
  4. Step 4: Simplify right side
    125,676x = 11,982,117,529.81
  5. Step 5: Solve for x
    x = 11,982,117,529.81/125,676
  6. Step 6: Final answer
    x = 95,341.33

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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.