Home / 142,787.41-197,047.79-79,126.27

Finding the Fourth Proportional to 142,787.41, 197,047.79 and 79,126.27

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Solution

The fourth proportional to 142,787.41, 197,047.79 and 79,126.27 is: 109,194.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,787.41 : 197,047.79 = 79,126.27 : x
  2. Step 2: Convert to fraction form
    142,787.41/197,047.79 = 79,126.27/x
  3. Step 3: Cross multiply
    142,787.41x = 197,047.79 × 79,126.27
  4. Step 4: Simplify right side
    142,787.41x = 15,591,656,042.92
  5. Step 5: Solve for x
    x = 15,591,656,042.92/142,787.41
  6. Step 6: Final answer
    x = 109,194.90

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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.