Home / 149,741.87-206,637.89-81,761.72

Finding the Fourth Proportional to 149,741.87, 206,637.89 and 81,761.72

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Solution

The fourth proportional to 149,741.87, 206,637.89 and 81,761.72 is: 112,827.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,741.87 : 206,637.89 = 81,761.72 : x
  2. Step 2: Convert to fraction form
    149,741.87/206,637.89 = 81,761.72/x
  3. Step 3: Cross multiply
    149,741.87x = 206,637.89 × 81,761.72
  4. Step 4: Simplify right side
    149,741.87x = 16,895,067,861.57
  5. Step 5: Solve for x
    x = 16,895,067,861.57/149,741.87
  6. Step 6: Final answer
    x = 112,827.95

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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.