Home / 136,100.26-187,828.88-81,654.48

Finding the Fourth Proportional to 136,100.26, 187,828.88 and 81,654.48

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Solution

The fourth proportional to 136,100.26, 187,828.88 and 81,654.48 is: 112,689.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,100.26 : 187,828.88 = 81,654.48 : x
  2. Step 2: Convert to fraction form
    136,100.26/187,828.88 = 81,654.48/x
  3. Step 3: Cross multiply
    136,100.26x = 187,828.88 × 81,654.48
  4. Step 4: Simplify right side
    136,100.26x = 15,337,068,177.97
  5. Step 5: Solve for x
    x = 15,337,068,177.97/136,100.26
  6. Step 6: Final answer
    x = 112,689.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.