Home / 138,585.43-191,247.91-74,923.21

Finding the Fourth Proportional to 138,585.43, 191,247.91 and 74,923.21

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Solution

The fourth proportional to 138,585.43, 191,247.91 and 74,923.21 is: 103,394.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,585.43 : 191,247.91 = 74,923.21 : x
  2. Step 2: Convert to fraction form
    138,585.43/191,247.91 = 74,923.21/x
  3. Step 3: Cross multiply
    138,585.43x = 191,247.91 × 74,923.21
  4. Step 4: Simplify right side
    138,585.43x = 14,328,906,657.56
  5. Step 5: Solve for x
    x = 14,328,906,657.56/138,585.43
  6. Step 6: Final answer
    x = 103,394.04

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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.