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Finding the Fourth Proportional to 125,689.82, 173,458.96 and 69,112.94

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Solution

The fourth proportional to 125,689.82, 173,458.96 and 69,112.94 is: 95,379.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,689.82 : 173,458.96 = 69,112.94 : x
  2. Step 2: Convert to fraction form
    125,689.82/173,458.96 = 69,112.94/x
  3. Step 3: Cross multiply
    125,689.82x = 173,458.96 × 69,112.94
  4. Step 4: Simplify right side
    125,689.82x = 11,988,258,694.94
  5. Step 5: Solve for x
    x = 11,988,258,694.94/125,689.82
  6. Step 6: Final answer
    x = 95,379.71

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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.