Home / 143,840.32-198,498.72-80,177.28

Finding the Fourth Proportional to 143,840.32, 198,498.72 and 80,177.28

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Solution

The fourth proportional to 143,840.32, 198,498.72 and 80,177.28 is: 110,644.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,840.32 : 198,498.72 = 80,177.28 : x
  2. Step 2: Convert to fraction form
    143,840.32/198,498.72 = 80,177.28/x
  3. Step 3: Cross multiply
    143,840.32x = 198,498.72 × 80,177.28
  4. Step 4: Simplify right side
    143,840.32x = 15,915,087,453.08
  5. Step 5: Solve for x
    x = 15,915,087,453.08/143,840.32
  6. Step 6: Final answer
    x = 110,644.13

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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.