Home / 149,731.88-206,628.57-81,748.25

Finding the Fourth Proportional to 149,731.88, 206,628.57 and 81,748.25

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Solution

The fourth proportional to 149,731.88, 206,628.57 and 81,748.25 is: 112,811.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,731.88 : 206,628.57 = 81,748.25 : x
  2. Step 2: Convert to fraction form
    149,731.88/206,628.57 = 81,748.25/x
  3. Step 3: Cross multiply
    149,731.88x = 206,628.57 × 81,748.25
  4. Step 4: Simplify right side
    149,731.88x = 16,891,523,997.50
  5. Step 5: Solve for x
    x = 16,891,523,997.50/149,731.88
  6. Step 6: Final answer
    x = 112,811.81

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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.