Home / 143,999.43-198,793.91-105,193.68

Finding the Fourth Proportional to 143,999.43, 198,793.91 and 105,193.68

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Solution

The fourth proportional to 143,999.43, 198,793.91 and 105,193.68 is: 145,221.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,999.43 : 198,793.91 = 105,193.68 : x
  2. Step 2: Convert to fraction form
    143,999.43/198,793.91 = 105,193.68/x
  3. Step 3: Cross multiply
    143,999.43x = 198,793.91 × 105,193.68
  4. Step 4: Simplify right side
    143,999.43x = 20,911,862,954.49
  5. Step 5: Solve for x
    x = 20,911,862,954.49/143,999.43
  6. Step 6: Final answer
    x = 145,221.85

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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.