Home / 143,565.22-198,138.82-82,335.40

Finding the Fourth Proportional to 143,565.22, 198,138.82 and 82,335.40

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Solution

The fourth proportional to 143,565.22, 198,138.82 and 82,335.40 is: 113,633.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,565.22 : 198,138.82 = 82,335.40 : x
  2. Step 2: Convert to fraction form
    143,565.22/198,138.82 = 82,335.40/x
  3. Step 3: Cross multiply
    143,565.22x = 198,138.82 × 82,335.40
  4. Step 4: Simplify right side
    143,565.22x = 16,313,839,000.23
  5. Step 5: Solve for x
    x = 16,313,839,000.23/143,565.22
  6. Step 6: Final answer
    x = 113,633.64

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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.