Home / 149,195.73-205,890.48-81,212.70

Finding the Fourth Proportional to 149,195.73, 205,890.48 and 81,212.70

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Solution

The fourth proportional to 149,195.73, 205,890.48 and 81,212.70 is: 112,073.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,195.73 : 205,890.48 = 81,212.70 : x
  2. Step 2: Convert to fraction form
    149,195.73/205,890.48 = 81,212.70/x
  3. Step 3: Cross multiply
    149,195.73x = 205,890.48 × 81,212.70
  4. Step 4: Simplify right side
    149,195.73x = 16,720,921,785.10
  5. Step 5: Solve for x
    x = 16,720,921,785.10/149,195.73
  6. Step 6: Final answer
    x = 112,073.73

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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.