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Finding the Fourth Proportional to 120,363.60, 166,101.47 and 69,375.91

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Solution

The fourth proportional to 120,363.60, 166,101.47 and 69,375.91 is: 95,738.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,363.60 : 166,101.47 = 69,375.91 : x
  2. Step 2: Convert to fraction form
    120,363.60/166,101.47 = 69,375.91/x
  3. Step 3: Cross multiply
    120,363.60x = 166,101.47 × 69,375.91
  4. Step 4: Simplify right side
    120,363.60x = 11,523,440,633.59
  5. Step 5: Solve for x
    x = 11,523,440,633.59/120,363.60
  6. Step 6: Final answer
    x = 95,738.58

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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.