Home / 220,997.64-305,013.72-130,376.10

Finding the Fourth Proportional to 220,997.64, 305,013.72 and 130,376.10

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Solution

The fourth proportional to 220,997.64, 305,013.72 and 130,376.10 is: 179,940.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,997.64 : 305,013.72 = 130,376.10 : x
  2. Step 2: Convert to fraction form
    220,997.64/305,013.72 = 130,376.10/x
  3. Step 3: Cross multiply
    220,997.64x = 305,013.72 × 130,376.10
  4. Step 4: Simplify right side
    220,997.64x = 39,766,499,260.09
  5. Step 5: Solve for x
    x = 39,766,499,260.09/220,997.64
  6. Step 6: Final answer
    x = 179,940.83

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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.