Home / 143,612.39-198,185.13-79,965.23

Finding the Fourth Proportional to 143,612.39, 198,185.13 and 79,965.23

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Solution

The fourth proportional to 143,612.39, 198,185.13 and 79,965.23 is: 110,352.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,612.39 : 198,185.13 = 79,965.23 : x
  2. Step 2: Convert to fraction form
    143,612.39/198,185.13 = 79,965.23/x
  3. Step 3: Cross multiply
    143,612.39x = 198,185.13 × 79,965.23
  4. Step 4: Simplify right side
    143,612.39x = 15,847,918,512.10
  5. Step 5: Solve for x
    x = 15,847,918,512.10/143,612.39
  6. Step 6: Final answer
    x = 110,352.03

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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.