Home / 131,402.39-197,228.10-81,331.01

Finding the Fourth Proportional to 131,402.39, 197,228.10 and 81,331.01

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Solution

The fourth proportional to 131,402.39, 197,228.10 and 81,331.01 is: 122,073.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,402.39 : 197,228.10 = 81,331.01 : x
  2. Step 2: Convert to fraction form
    131,402.39/197,228.10 = 81,331.01/x
  3. Step 3: Cross multiply
    131,402.39x = 197,228.10 × 81,331.01
  4. Step 4: Simplify right side
    131,402.39x = 16,040,760,573.38
  5. Step 5: Solve for x
    x = 16,040,760,573.38/131,402.39
  6. Step 6: Final answer
    x = 122,073.58

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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.