Home / 131,367.92-197,116.27-81,434.79

Finding the Fourth Proportional to 131,367.92, 197,116.27 and 81,434.79

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Solution

The fourth proportional to 131,367.92, 197,116.27 and 81,434.79 is: 122,192.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,367.92 : 197,116.27 = 81,434.79 : x
  2. Step 2: Convert to fraction form
    131,367.92/197,116.27 = 81,434.79/x
  3. Step 3: Cross multiply
    131,367.92x = 197,116.27 × 81,434.79
  4. Step 4: Simplify right side
    131,367.92x = 16,052,121,849.45
  5. Step 5: Solve for x
    x = 16,052,121,849.45/131,367.92
  6. Step 6: Final answer
    x = 122,192.10

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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.