Home / 148,974.29-205,586.26-80,989.78

Finding the Fourth Proportional to 148,974.29, 205,586.26 and 80,989.78

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Solution

The fourth proportional to 148,974.29, 205,586.26 and 80,989.78 is: 111,766.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,974.29 : 205,586.26 = 80,989.78 : x
  2. Step 2: Convert to fraction form
    148,974.29/205,586.26 = 80,989.78/x
  3. Step 3: Cross multiply
    148,974.29x = 205,586.26 × 80,989.78
  4. Step 4: Simplify right side
    148,974.29x = 16,650,385,968.42
  5. Step 5: Solve for x
    x = 16,650,385,968.42/148,974.29
  6. Step 6: Final answer
    x = 111,766.84

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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.