Home / 143,889.28-198,555.84-80,222.08

Finding the Fourth Proportional to 143,889.28, 198,555.84 and 80,222.08

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Solution

The fourth proportional to 143,889.28, 198,555.84 and 80,222.08 is: 110,700.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,889.28 : 198,555.84 = 80,222.08 : x
  2. Step 2: Convert to fraction form
    143,889.28/198,555.84 = 80,222.08/x
  3. Step 3: Cross multiply
    143,889.28x = 198,555.84 × 80,222.08
  4. Step 4: Simplify right side
    143,889.28x = 15,928,562,480.95
  5. Step 5: Solve for x
    x = 15,928,562,480.95/143,889.28
  6. Step 6: Final answer
    x = 110,700.13

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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.