Home / 143,805.16-198,445.62-80,139.88

Finding the Fourth Proportional to 143,805.16, 198,445.62 and 80,139.88

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Solution

The fourth proportional to 143,805.16, 198,445.62 and 80,139.88 is: 110,589.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,805.16 : 198,445.62 = 80,139.88 : x
  2. Step 2: Convert to fraction form
    143,805.16/198,445.62 = 80,139.88/x
  3. Step 3: Cross multiply
    143,805.16x = 198,445.62 × 80,139.88
  4. Step 4: Simplify right side
    143,805.16x = 15,903,408,173.33
  5. Step 5: Solve for x
    x = 15,903,408,173.33/143,805.16
  6. Step 6: Final answer
    x = 110,589.97

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1.5x scale

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.