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Finding the Fourth Proportional to 169,449.10, 254,008.38 and 80,678.76

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Solution

The fourth proportional to 169,449.10, 254,008.38 and 80,678.76 is: 120,939.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,449.10 : 254,008.38 = 80,678.76 : x
  2. Step 2: Convert to fraction form
    169,449.10/254,008.38 = 80,678.76/x
  3. Step 3: Cross multiply
    169,449.10x = 254,008.38 × 80,678.76
  4. Step 4: Simplify right side
    169,449.10x = 20,493,081,128.01
  5. Step 5: Solve for x
    x = 20,493,081,128.01/169,449.10
  6. Step 6: Final answer
    x = 120,939.45

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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.