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Finding the Fourth Proportional to 138,574.44, 191,233.22 and 74,912.24

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Solution

The fourth proportional to 138,574.44, 191,233.22 and 74,912.24 is: 103,379.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,574.44 : 191,233.22 = 74,912.24 : x
  2. Step 2: Convert to fraction form
    138,574.44/191,233.22 = 74,912.24/x
  3. Step 3: Cross multiply
    138,574.44x = 191,233.22 × 74,912.24
  4. Step 4: Simplify right side
    138,574.44x = 14,325,708,976.13
  5. Step 5: Solve for x
    x = 14,325,708,976.13/138,574.44
  6. Step 6: Final answer
    x = 103,379.16

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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.