Home / 143,693.54-198,295.11-80,031.79

Finding the Fourth Proportional to 143,693.54, 198,295.11 and 80,031.79

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Solution

The fourth proportional to 143,693.54, 198,295.11 and 80,031.79 is: 110,442.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,693.54 : 198,295.11 = 80,031.79 : x
  2. Step 2: Convert to fraction form
    143,693.54/198,295.11 = 80,031.79/x
  3. Step 3: Cross multiply
    143,693.54x = 198,295.11 × 80,031.79
  4. Step 4: Simplify right side
    143,693.54x = 15,869,912,105.81
  5. Step 5: Solve for x
    x = 15,869,912,105.81/143,693.54
  6. Step 6: Final answer
    x = 110,442.77

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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.