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Finding the Fourth Proportional to 169,451.10, 254,011.38 and 80,680.76

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Solution

The fourth proportional to 169,451.10, 254,011.38 and 80,680.76 is: 120,942.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,451.10 : 254,011.38 = 80,680.76 : x
  2. Step 2: Convert to fraction form
    169,451.10/254,011.38 = 80,680.76/x
  3. Step 3: Cross multiply
    169,451.10x = 254,011.38 × 80,680.76
  4. Step 4: Simplify right side
    169,451.10x = 20,493,831,187.05
  5. Step 5: Solve for x
    x = 20,493,831,187.05/169,451.10
  6. Step 6: Final answer
    x = 120,942.45

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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.