Home / 142,677.78-196,447.17-121,122.87

Finding the Fourth Proportional to 142,677.78, 196,447.17 and 121,122.87

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Solution

The fourth proportional to 142,677.78, 196,447.17 and 121,122.87 is: 166,769.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,677.78 : 196,447.17 = 121,122.87 : x
  2. Step 2: Convert to fraction form
    142,677.78/196,447.17 = 121,122.87/x
  3. Step 3: Cross multiply
    142,677.78x = 196,447.17 × 121,122.87
  4. Step 4: Simplify right side
    142,677.78x = 23,794,245,033.78
  5. Step 5: Solve for x
    x = 23,794,245,033.78/142,677.78
  6. Step 6: Final answer
    x = 166,769.10

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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.