Home / 142,787.94-197,042.40-79,131.66

Finding the Fourth Proportional to 142,787.94, 197,042.40 and 79,131.66

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Solution

The fourth proportional to 142,787.94, 197,042.40 and 79,131.66 is: 109,198.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,787.94 : 197,042.40 = 79,131.66 : x
  2. Step 2: Convert to fraction form
    142,787.94/197,042.40 = 79,131.66/x
  3. Step 3: Cross multiply
    142,787.94x = 197,042.40 × 79,131.66
  4. Step 4: Simplify right side
    142,787.94x = 15,592,292,202.38
  5. Step 5: Solve for x
    x = 15,592,292,202.38/142,787.94
  6. Step 6: Final answer
    x = 109,198.94

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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.