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Finding the Fourth Proportional to 125,979.84, 173,852.14 and 69,391.21

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Solution

The fourth proportional to 125,979.84, 173,852.14 and 69,391.21 is: 95,759.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,979.84 : 173,852.14 = 69,391.21 : x
  2. Step 2: Convert to fraction form
    125,979.84/173,852.14 = 69,391.21/x
  3. Step 3: Cross multiply
    125,979.84x = 173,852.14 × 69,391.21
  4. Step 4: Simplify right side
    125,979.84x = 12,063,810,355.69
  5. Step 5: Solve for x
    x = 12,063,810,355.69/125,979.84
  6. Step 6: Final answer
    x = 95,759.85

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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.