Home / 149,653.29-206,519.77-81,671.43

Finding the Fourth Proportional to 149,653.29, 206,519.77 and 81,671.43

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Solution

The fourth proportional to 149,653.29, 206,519.77 and 81,671.43 is: 112,705.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,653.29 : 206,519.77 = 81,671.43 : x
  2. Step 2: Convert to fraction form
    149,653.29/206,519.77 = 81,671.43/x
  3. Step 3: Cross multiply
    149,653.29x = 206,519.77 × 81,671.43
  4. Step 4: Simplify right side
    149,653.29x = 16,866,764,939.17
  5. Step 5: Solve for x
    x = 16,866,764,939.17/149,653.29
  6. Step 6: Final answer
    x = 112,705.61

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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.