Home / 149,731.38-206,629.29-86,081.58

Finding the Fourth Proportional to 149,731.38, 206,629.29 and 86,081.58

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Solution

The fourth proportional to 149,731.38, 206,629.29 and 86,081.58 is: 118,792.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,731.38 : 206,629.29 = 86,081.58 : x
  2. Step 2: Convert to fraction form
    149,731.38/206,629.29 = 86,081.58/x
  3. Step 3: Cross multiply
    149,731.38x = 206,629.29 × 86,081.58
  4. Step 4: Simplify right side
    149,731.38x = 17,786,975,757.48
  5. Step 5: Solve for x
    x = 17,786,975,757.48/149,731.38
  6. Step 6: Final answer
    x = 118,792.57

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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.