Home / 149,641.31-206,540.46-86,016.08

Finding the Fourth Proportional to 149,641.31, 206,540.46 and 86,016.08

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Solution

The fourth proportional to 149,641.31, 206,540.46 and 86,016.08 is: 118,722.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,641.31 : 206,540.46 = 86,016.08 : x
  2. Step 2: Convert to fraction form
    149,641.31/206,540.46 = 86,016.08/x
  3. Step 3: Cross multiply
    149,641.31x = 206,540.46 × 86,016.08
  4. Step 4: Simplify right side
    149,641.31x = 17,765,799,697.89
  5. Step 5: Solve for x
    x = 17,765,799,697.89/149,641.31
  6. Step 6: Final answer
    x = 118,722.57

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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.