Home / 149,426.25-206,208.30-81,443.30

Finding the Fourth Proportional to 149,426.25, 206,208.30 and 81,443.30

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Solution

The fourth proportional to 149,426.25, 206,208.30 and 81,443.30 is: 112,391.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,426.25 : 206,208.30 = 81,443.30 : x
  2. Step 2: Convert to fraction form
    149,426.25/206,208.30 = 81,443.30/x
  3. Step 3: Cross multiply
    149,426.25x = 206,208.30 × 81,443.30
  4. Step 4: Simplify right side
    149,426.25x = 16,794,283,408.35
  5. Step 5: Solve for x
    x = 16,794,283,408.35/149,426.25
  6. Step 6: Final answer
    x = 112,391.79

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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.