Home / 143,778.94-215,340.36-126,961

Finding the Fourth Proportional to 143,778.94, 215,340.36 and 126,961

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Solution

The fourth proportional to 143,778.94, 215,340.36 and 126,961 is: 190,151.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,778.94 : 215,340.36 = 126,961 : x
  2. Step 2: Convert to fraction form
    143,778.94/215,340.36 = 126,961/x
  3. Step 3: Cross multiply
    143,778.94x = 215,340.36 × 126,961
  4. Step 4: Simplify right side
    143,778.94x = 27,339,827,445.96
  5. Step 5: Solve for x
    x = 27,339,827,445.96/143,778.94
  6. Step 6: Final answer
    x = 190,151.82

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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.