Home / 149,744.91-206,656.36-81,768.21

Finding the Fourth Proportional to 149,744.91, 206,656.36 and 81,768.21

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Solution

The fourth proportional to 149,744.91, 206,656.36 and 81,768.21 is: 112,844.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,744.91 : 206,656.36 = 81,768.21 : x
  2. Step 2: Convert to fraction form
    149,744.91/206,656.36 = 81,768.21/x
  3. Step 3: Cross multiply
    149,744.91x = 206,656.36 × 81,768.21
  4. Step 4: Simplify right side
    149,744.91x = 16,897,920,642.32
  5. Step 5: Solve for x
    x = 16,897,920,642.32/149,744.91
  6. Step 6: Final answer
    x = 112,844.71

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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.