Home / 142,641.38-213,757.94-80,180.66

Finding the Fourth Proportional to 142,641.38, 213,757.94 and 80,180.66

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Solution

The fourth proportional to 142,641.38, 213,757.94 and 80,180.66 is: 120,156.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,641.38 : 213,757.94 = 80,180.66 : x
  2. Step 2: Convert to fraction form
    142,641.38/213,757.94 = 80,180.66/x
  3. Step 3: Cross multiply
    142,641.38x = 213,757.94 × 80,180.66
  4. Step 4: Simplify right side
    142,641.38x = 17,139,252,709.44
  5. Step 5: Solve for x
    x = 17,139,252,709.44/142,641.38
  6. Step 6: Final answer
    x = 120,156.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.