Home / 148,795.20-205,372.80-85,169.76

Finding the Fourth Proportional to 148,795.20, 205,372.80 and 85,169.76

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Solution

The fourth proportional to 148,795.20, 205,372.80 and 85,169.76 is: 117,554.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,795.20 : 205,372.80 = 85,169.76 : x
  2. Step 2: Convert to fraction form
    148,795.20/205,372.80 = 85,169.76/x
  3. Step 3: Cross multiply
    148,795.20x = 205,372.80 × 85,169.76
  4. Step 4: Simplify right side
    148,795.20x = 17,491,552,086.53
  5. Step 5: Solve for x
    x = 17,491,552,086.53/148,795.20
  6. Step 6: Final answer
    x = 117,554.55

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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.