Home / 143,966.80-198,669.72-80,315.38

Finding the Fourth Proportional to 143,966.80, 198,669.72 and 80,315.38

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Solution

The fourth proportional to 143,966.80, 198,669.72 and 80,315.38 is: 110,832.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,966.80 : 198,669.72 = 80,315.38 : x
  2. Step 2: Convert to fraction form
    143,966.80/198,669.72 = 80,315.38/x
  3. Step 3: Cross multiply
    143,966.80x = 198,669.72 × 80,315.38
  4. Step 4: Simplify right side
    143,966.80x = 15,956,234,056.29
  5. Step 5: Solve for x
    x = 15,956,234,056.29/143,966.80
  6. Step 6: Final answer
    x = 110,832.73

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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.