Home / 143,657.28-198,244.80-80,000.64

Finding the Fourth Proportional to 143,657.28, 198,244.80 and 80,000.64

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Solution

The fourth proportional to 143,657.28, 198,244.80 and 80,000.64 is: 110,399.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,657.28 : 198,244.80 = 80,000.64 : x
  2. Step 2: Convert to fraction form
    143,657.28/198,244.80 = 80,000.64/x
  3. Step 3: Cross multiply
    143,657.28x = 198,244.80 × 80,000.64
  4. Step 4: Simplify right side
    143,657.28x = 15,859,710,876.67
  5. Step 5: Solve for x
    x = 15,859,710,876.67/143,657.28
  6. Step 6: Final answer
    x = 110,399.63

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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.