Home / 143,635.08-198,217.78-79,974.24

Finding the Fourth Proportional to 143,635.08, 198,217.78 and 79,974.24

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Solution

The fourth proportional to 143,635.08, 198,217.78 and 79,974.24 is: 110,365.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,635.08 : 198,217.78 = 79,974.24 : x
  2. Step 2: Convert to fraction form
    143,635.08/198,217.78 = 79,974.24/x
  3. Step 3: Cross multiply
    143,635.08x = 198,217.78 × 79,974.24
  4. Step 4: Simplify right side
    143,635.08x = 15,852,316,309.99
  5. Step 5: Solve for x
    x = 15,852,316,309.99/143,635.08
  6. Step 6: Final answer
    x = 110,365.21

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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.