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Finding the Fourth Proportional to 169,678.50, 254,405.42 and 80,945.70

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Solution

The fourth proportional to 169,678.50, 254,405.42 and 80,945.70 is: 121,364.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,678.50 : 254,405.42 = 80,945.70 : x
  2. Step 2: Convert to fraction form
    169,678.50/254,405.42 = 80,945.70/x
  3. Step 3: Cross multiply
    169,678.50x = 254,405.42 × 80,945.70
  4. Step 4: Simplify right side
    169,678.50x = 20,593,024,805.69
  5. Step 5: Solve for x
    x = 20,593,024,805.69/169,678.50
  6. Step 6: Final answer
    x = 121,364.96

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1.5x scale

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.