Home / 100,691.64-138,957.93-55,371.33

Finding the Fourth Proportional to 100,691.64, 138,957.93 and 55,371.33

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Solution

The fourth proportional to 100,691.64, 138,957.93 and 55,371.33 is: 76,414.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,691.64 : 138,957.93 = 55,371.33 : x
  2. Step 2: Convert to fraction form
    100,691.64/138,957.93 = 55,371.33/x
  3. Step 3: Cross multiply
    100,691.64x = 138,957.93 × 55,371.33
  4. Step 4: Simplify right side
    100,691.64x = 7,694,285,398.15
  5. Step 5: Solve for x
    x = 7,694,285,398.15/100,691.64
  6. Step 6: Final answer
    x = 76,414.34

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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.