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Finding the Fourth Proportional to 169,305.40, 253,979.09 and 55,414.09

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Solution

The fourth proportional to 169,305.40, 253,979.09 and 55,414.09 is: 83,128.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,305.40 : 253,979.09 = 55,414.09 : x
  2. Step 2: Convert to fraction form
    169,305.40/253,979.09 = 55,414.09/x
  3. Step 3: Cross multiply
    169,305.40x = 253,979.09 × 55,414.09
  4. Step 4: Simplify right side
    169,305.40x = 14,074,020,151.38
  5. Step 5: Solve for x
    x = 14,074,020,151.38/169,305.40
  6. Step 6: Final answer
    x = 83,128.01

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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.