Home / 149,193.50-205,891.27-81,214.85

Finding the Fourth Proportional to 149,193.50, 205,891.27 and 81,214.85

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Solution

The fourth proportional to 149,193.50, 205,891.27 and 81,214.85 is: 112,078.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,193.50 : 205,891.27 = 81,214.85 : x
  2. Step 2: Convert to fraction form
    149,193.50/205,891.27 = 81,214.85/x
  3. Step 3: Cross multiply
    149,193.50x = 205,891.27 × 81,214.85
  4. Step 4: Simplify right side
    149,193.50x = 16,721,428,921.05
  5. Step 5: Solve for x
    x = 16,721,428,921.05/149,193.50
  6. Step 6: Final answer
    x = 112,078.81

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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.