Home / 112,664.38-155,475.55-61,676.50

Finding the Fourth Proportional to 112,664.38, 155,475.55 and 61,676.50

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Solution

The fourth proportional to 112,664.38, 155,475.55 and 61,676.50 is: 85,112.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,664.38 : 155,475.55 = 61,676.50 : x
  2. Step 2: Convert to fraction form
    112,664.38/155,475.55 = 61,676.50/x
  3. Step 3: Cross multiply
    112,664.38x = 155,475.55 × 61,676.50
  4. Step 4: Simplify right side
    112,664.38x = 9,589,187,759.58
  5. Step 5: Solve for x
    x = 9,589,187,759.58/112,664.38
  6. Step 6: Final answer
    x = 85,112.86

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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.