Home / 131,291.37-197,001.32-81,358.11

Finding the Fourth Proportional to 131,291.37, 197,001.32 and 81,358.11

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Solution

The fourth proportional to 131,291.37, 197,001.32 and 81,358.11 is: 122,076.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,291.37 : 197,001.32 = 81,358.11 : x
  2. Step 2: Convert to fraction form
    131,291.37/197,001.32 = 81,358.11/x
  3. Step 3: Cross multiply
    131,291.37x = 197,001.32 × 81,358.11
  4. Step 4: Simplify right side
    131,291.37x = 16,027,654,655.91
  5. Step 5: Solve for x
    x = 16,027,654,655.91/131,291.37
  6. Step 6: Final answer
    x = 122,076.99

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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.