Home / 103,826.40-155,912.40-57,112.80

Finding the Fourth Proportional to 103,826.40, 155,912.40 and 57,112.80

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Solution

The fourth proportional to 103,826.40, 155,912.40 and 57,112.80 is: 85,764.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,826.40 : 155,912.40 = 57,112.80 : x
  2. Step 2: Convert to fraction form
    103,826.40/155,912.40 = 57,112.80/x
  3. Step 3: Cross multiply
    103,826.40x = 155,912.40 × 57,112.80
  4. Step 4: Simplify right side
    103,826.40x = 8,904,593,718.72
  5. Step 5: Solve for x
    x = 8,904,593,718.72/103,826.40
  6. Step 6: Final answer
    x = 85,764.25

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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.