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Finding the Fourth Proportional to 169,689.56, 254,146.82 and 81,005.36

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Solution

The fourth proportional to 169,689.56, 254,146.82 and 81,005.36 is: 121,323.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,689.56 : 254,146.82 = 81,005.36 : x
  2. Step 2: Convert to fraction form
    169,689.56/254,146.82 = 81,005.36/x
  3. Step 3: Cross multiply
    169,689.56x = 254,146.82 × 81,005.36
  4. Step 4: Simplify right side
    169,689.56x = 20,587,252,971.19
  5. Step 5: Solve for x
    x = 20,587,252,971.19/169,689.56
  6. Step 6: Final answer
    x = 121,323.04

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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.