Home / 149,749.98-206,655.42-81,767.55

Finding the Fourth Proportional to 149,749.98, 206,655.42 and 81,767.55

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Solution

The fourth proportional to 149,749.98, 206,655.42 and 81,767.55 is: 112,839.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,749.98 : 206,655.42 = 81,767.55 : x
  2. Step 2: Convert to fraction form
    149,749.98/206,655.42 = 81,767.55/x
  3. Step 3: Cross multiply
    149,749.98x = 206,655.42 × 81,767.55
  4. Step 4: Simplify right side
    149,749.98x = 16,897,707,387.62
  5. Step 5: Solve for x
    x = 16,897,707,387.62/149,749.98
  6. Step 6: Final answer
    x = 112,839.46

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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.