Home / 157,615.38-217,589.49-121,724.82

Finding the Fourth Proportional to 157,615.38, 217,589.49 and 121,724.82

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Solution

The fourth proportional to 157,615.38, 217,589.49 and 121,724.82 is: 168,042.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,615.38 : 217,589.49 = 121,724.82 : x
  2. Step 2: Convert to fraction form
    157,615.38/217,589.49 = 121,724.82/x
  3. Step 3: Cross multiply
    157,615.38x = 217,589.49 × 121,724.82
  4. Step 4: Simplify right side
    157,615.38x = 26,486,041,504.14
  5. Step 5: Solve for x
    x = 26,486,041,504.14/157,615.38
  6. Step 6: Final answer
    x = 168,042.24

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1.5x scale

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.