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Finding the Fourth Proportional to 169,771.48, 254,269.46 and 81,087.71

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Solution

The fourth proportional to 169,771.48, 254,269.46 and 81,087.71 is: 121,446.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,771.48 : 254,269.46 = 81,087.71 : x
  2. Step 2: Convert to fraction form
    169,771.48/254,269.46 = 81,087.71/x
  3. Step 3: Cross multiply
    169,771.48x = 254,269.46 × 81,087.71
  4. Step 4: Simplify right side
    169,771.48x = 20,618,127,165.71
  5. Step 5: Solve for x
    x = 20,618,127,165.71/169,771.48
  6. Step 6: Final answer
    x = 121,446.36

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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.