Home / 149,899.76-206,873.46-85,371.72

Finding the Fourth Proportional to 149,899.76, 206,873.46 and 85,371.72

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Solution

The fourth proportional to 149,899.76, 206,873.46 and 85,371.72 is: 117,819.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,899.76 : 206,873.46 = 85,371.72 : x
  2. Step 2: Convert to fraction form
    149,899.76/206,873.46 = 85,371.72/x
  3. Step 3: Cross multiply
    149,899.76x = 206,873.46 × 85,371.72
  4. Step 4: Simplify right side
    149,899.76x = 17,661,143,490.44
  5. Step 5: Solve for x
    x = 17,661,143,490.44/149,899.76
  6. Step 6: Final answer
    x = 117,819.69

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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.