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Finding the Fourth Proportional to 169,638.43, 254,070.05 and 80,954.21

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Solution

The fourth proportional to 169,638.43, 254,070.05 and 80,954.21 is: 121,246.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,638.43 : 254,070.05 = 80,954.21 : x
  2. Step 2: Convert to fraction form
    169,638.43/254,070.05 = 80,954.21/x
  3. Step 3: Cross multiply
    169,638.43x = 254,070.05 × 80,954.21
  4. Step 4: Simplify right side
    169,638.43x = 20,568,039,114.45
  5. Step 5: Solve for x
    x = 20,568,039,114.45/169,638.43
  6. Step 6: Final answer
    x = 121,246.34

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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.