Home / 138,422.24-191,022.62-74,760.04

Finding the Fourth Proportional to 138,422.24, 191,022.62 and 74,760.04

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Solution

The fourth proportional to 138,422.24, 191,022.62 and 74,760.04 is: 103,168.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,422.24 : 191,022.62 = 74,760.04 : x
  2. Step 2: Convert to fraction form
    138,422.24/191,022.62 = 74,760.04/x
  3. Step 3: Cross multiply
    138,422.24x = 191,022.62 × 74,760.04
  4. Step 4: Simplify right side
    138,422.24x = 14,280,858,712.10
  5. Step 5: Solve for x
    x = 14,280,858,712.10/138,422.24
  6. Step 6: Final answer
    x = 103,168.82

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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.