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Finding the Fourth Proportional to 169,674.18, 254,123.67 and 80,990.11

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Solution

The fourth proportional to 169,674.18, 254,123.67 and 80,990.11 is: 121,300.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,674.18 : 254,123.67 = 80,990.11 : x
  2. Step 2: Convert to fraction form
    169,674.18/254,123.67 = 80,990.11/x
  3. Step 3: Cross multiply
    169,674.18x = 254,123.67 × 80,990.11
  4. Step 4: Simplify right side
    169,674.18x = 20,581,503,986.90
  5. Step 5: Solve for x
    x = 20,581,503,986.90/169,674.18
  6. Step 6: Final answer
    x = 121,300.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.