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Finding the Fourth Proportional to 169,641.40, 254,462.10 and 80,937.40

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Solution

The fourth proportional to 169,641.40, 254,462.10 and 80,937.40 is: 121,406.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,641.40 : 254,462.10 = 80,937.40 : x
  2. Step 2: Convert to fraction form
    169,641.40/254,462.10 = 80,937.40/x
  3. Step 3: Cross multiply
    169,641.40x = 254,462.10 × 80,937.40
  4. Step 4: Simplify right side
    169,641.40x = 20,595,500,772.54
  5. Step 5: Solve for x
    x = 20,595,500,772.54/169,641.40
  6. Step 6: Final answer
    x = 121,406.10

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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.