Home / 131,949.91-182,086.45-78,203.02

Finding the Fourth Proportional to 131,949.91, 182,086.45 and 78,203.02

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Solution

The fourth proportional to 131,949.91, 182,086.45 and 78,203.02 is: 107,917.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,949.91 : 182,086.45 = 78,203.02 : x
  2. Step 2: Convert to fraction form
    131,949.91/182,086.45 = 78,203.02/x
  3. Step 3: Cross multiply
    131,949.91x = 182,086.45 × 78,203.02
  4. Step 4: Simplify right side
    131,949.91x = 14,239,709,900.06
  5. Step 5: Solve for x
    x = 14,239,709,900.06/131,949.91
  6. Step 6: Final answer
    x = 107,917.54

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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.