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Finding the Fourth Proportional to 125,564.88, 173,291.72 and 71,857.56

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Solution

The fourth proportional to 125,564.88, 173,291.72 and 71,857.56 is: 99,170.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,564.88 : 173,291.72 = 71,857.56 : x
  2. Step 2: Convert to fraction form
    125,564.88/173,291.72 = 71,857.56/x
  3. Step 3: Cross multiply
    125,564.88x = 173,291.72 × 71,857.56
  4. Step 4: Simplify right side
    125,564.88x = 12,452,320,167.40
  5. Step 5: Solve for x
    x = 12,452,320,167.40/125,564.88
  6. Step 6: Final answer
    x = 99,170.41

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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.