Home / 82,195.48-122,571.50-81,447.04

Finding the Fourth Proportional to 82,195.48, 122,571.50 and 81,447.04

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Solution

The fourth proportional to 82,195.48, 122,571.50 and 81,447.04 is: 121,455.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,195.48 : 122,571.50 = 81,447.04 : x
  2. Step 2: Convert to fraction form
    82,195.48/122,571.50 = 81,447.04/x
  3. Step 3: Cross multiply
    82,195.48x = 122,571.50 × 81,447.04
  4. Step 4: Simplify right side
    82,195.48x = 9,983,085,863.36
  5. Step 5: Solve for x
    x = 9,983,085,863.36/82,195.48
  6. Step 6: Final answer
    x = 121,455.41

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.