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Finding the Fourth Proportional to 169,456.40, 254,069.40 and 80,752.40

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Solution

The fourth proportional to 169,456.40, 254,069.40 and 80,752.40 is: 121,073.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,456.40 : 254,069.40 = 80,752.40 : x
  2. Step 2: Convert to fraction form
    169,456.40/254,069.40 = 80,752.40/x
  3. Step 3: Cross multiply
    169,456.40x = 254,069.40 × 80,752.40
  4. Step 4: Simplify right side
    169,456.40x = 20,516,713,816.56
  5. Step 5: Solve for x
    x = 20,516,713,816.56/169,456.40
  6. Step 6: Final answer
    x = 121,073.70

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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.