Home / 143,701.28-198,254.16-143,479.76

Finding the Fourth Proportional to 143,701.28, 198,254.16 and 143,479.76

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Solution

The fourth proportional to 143,701.28, 198,254.16 and 143,479.76 is: 197,948.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,701.28 : 198,254.16 = 143,479.76 : x
  2. Step 2: Convert to fraction form
    143,701.28/198,254.16 = 143,479.76/x
  3. Step 3: Cross multiply
    143,701.28x = 198,254.16 × 143,479.76
  4. Step 4: Simplify right side
    143,701.28x = 28,445,459,295.80
  5. Step 5: Solve for x
    x = 28,445,459,295.80/143,701.28
  6. Step 6: Final answer
    x = 197,948.55

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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.