Home / 131,367.66-197,115.90-81,434.54

Finding the Fourth Proportional to 131,367.66, 197,115.90 and 81,434.54

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Solution

The fourth proportional to 131,367.66, 197,115.90 and 81,434.54 is: 122,191.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,367.66 : 197,115.90 = 81,434.54 : x
  2. Step 2: Convert to fraction form
    131,367.66/197,115.90 = 81,434.54/x
  3. Step 3: Cross multiply
    131,367.66x = 197,115.90 × 81,434.54
  4. Step 4: Simplify right side
    131,367.66x = 16,052,042,643.19
  5. Step 5: Solve for x
    x = 16,052,042,643.19/131,367.66
  6. Step 6: Final answer
    x = 122,191.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.