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Finding the Fourth Proportional to 125,977.62, 173,849.10 and 69,389

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Solution

The fourth proportional to 125,977.62, 173,849.10 and 69,389 is: 95,756.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,977.62 : 173,849.10 = 69,389 : x
  2. Step 2: Convert to fraction form
    125,977.62/173,849.10 = 69,389/x
  3. Step 3: Cross multiply
    125,977.62x = 173,849.10 × 69,389
  4. Step 4: Simplify right side
    125,977.62x = 12,063,215,199.90
  5. Step 5: Solve for x
    x = 12,063,215,199.90/125,977.62
  6. Step 6: Final answer
    x = 95,756.81

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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.