Home / 143,906.39-198,585.91-79,378.18

Finding the Fourth Proportional to 143,906.39, 198,585.91 and 79,378.18

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Solution

The fourth proportional to 143,906.39, 198,585.91 and 79,378.18 is: 109,539.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,906.39 : 198,585.91 = 79,378.18 : x
  2. Step 2: Convert to fraction form
    143,906.39/198,585.91 = 79,378.18/x
  3. Step 3: Cross multiply
    143,906.39x = 198,585.91 × 79,378.18
  4. Step 4: Simplify right side
    143,906.39x = 15,763,387,712.20
  5. Step 5: Solve for x
    x = 15,763,387,712.20/143,906.39
  6. Step 6: Final answer
    x = 109,539.18

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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.