Home / 143,561.22-198,133.29-82,331.40

Finding the Fourth Proportional to 143,561.22, 198,133.29 and 82,331.40

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Solution

The fourth proportional to 143,561.22, 198,133.29 and 82,331.40 is: 113,628.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,561.22 : 198,133.29 = 82,331.40 : x
  2. Step 2: Convert to fraction form
    143,561.22/198,133.29 = 82,331.40/x
  3. Step 3: Cross multiply
    143,561.22x = 198,133.29 × 82,331.40
  4. Step 4: Simplify right side
    143,561.22x = 16,312,591,152.31
  5. Step 5: Solve for x
    x = 16,312,591,152.31/143,561.22
  6. Step 6: Final answer
    x = 113,628.12

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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.