Home / 100,414.04-138,572.78-55,091.19

Finding the Fourth Proportional to 100,414.04, 138,572.78 and 55,091.19

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Solution

The fourth proportional to 100,414.04, 138,572.78 and 55,091.19 is: 76,026.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,414.04 : 138,572.78 = 55,091.19 : x
  2. Step 2: Convert to fraction form
    100,414.04/138,572.78 = 55,091.19/x
  3. Step 3: Cross multiply
    100,414.04x = 138,572.78 × 55,091.19
  4. Step 4: Simplify right side
    100,414.04x = 7,634,139,076.35
  5. Step 5: Solve for x
    x = 7,634,139,076.35/100,414.04
  6. Step 6: Final answer
    x = 76,026.61

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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.