Home / 149,660.43-206,536.19-85,128.00

Finding the Fourth Proportional to 149,660.43, 206,536.19 and 85,128.00

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Solution

The fourth proportional to 149,660.43, 206,536.19 and 85,128.00 is: 117,479.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,660.43 : 206,536.19 = 85,128.00 : x
  2. Step 2: Convert to fraction form
    149,660.43/206,536.19 = 85,128.00/x
  3. Step 3: Cross multiply
    149,660.43x = 206,536.19 × 85,128.00
  4. Step 4: Simplify right side
    149,660.43x = 17,582,012,478.80
  5. Step 5: Solve for x
    x = 17,582,012,478.80/149,660.43
  6. Step 6: Final answer
    x = 117,479.37

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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.