Home / 100,091.24-138,123.78-54,769.04

Finding the Fourth Proportional to 100,091.24, 138,123.78 and 54,769.04

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Solution

The fourth proportional to 100,091.24, 138,123.78 and 54,769.04 is: 75,580.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,091.24 : 138,123.78 = 54,769.04 : x
  2. Step 2: Convert to fraction form
    100,091.24/138,123.78 = 54,769.04/x
  3. Step 3: Cross multiply
    100,091.24x = 138,123.78 × 54,769.04
  4. Step 4: Simplify right side
    100,091.24x = 7,564,906,831.77
  5. Step 5: Solve for x
    x = 7,564,906,831.77/100,091.24
  6. Step 6: Final answer
    x = 75,580.11

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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.