Home / 143,669.28-198,210-143,447.76

Finding the Fourth Proportional to 143,669.28, 198,210 and 143,447.76

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Solution

The fourth proportional to 143,669.28, 198,210 and 143,447.76 is: 197,904.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,669.28 : 198,210 = 143,447.76 : x
  2. Step 2: Convert to fraction form
    143,669.28/198,210 = 143,447.76/x
  3. Step 3: Cross multiply
    143,669.28x = 198,210 × 143,447.76
  4. Step 4: Simplify right side
    143,669.28x = 28,432,780,509.60
  5. Step 5: Solve for x
    x = 28,432,780,509.60/143,669.28
  6. Step 6: Final answer
    x = 197,904.39

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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.