Home / 149,836.08-206,764.65-81,839.28

Finding the Fourth Proportional to 149,836.08, 206,764.65 and 81,839.28

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Solution

The fourth proportional to 149,836.08, 206,764.65 and 81,839.28 is: 112,933.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,836.08 : 206,764.65 = 81,839.28 : x
  2. Step 2: Convert to fraction form
    149,836.08/206,764.65 = 81,839.28/x
  3. Step 3: Cross multiply
    149,836.08x = 206,764.65 × 81,839.28
  4. Step 4: Simplify right side
    149,836.08x = 16,921,470,085.45
  5. Step 5: Solve for x
    x = 16,921,470,085.45/149,836.08
  6. Step 6: Final answer
    x = 112,933.21

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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.