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Finding the Fourth Proportional to 138,594.48, 191,260.32 and 74,932.26

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Solution

The fourth proportional to 138,594.48, 191,260.32 and 74,932.26 is: 103,406.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,594.48 : 191,260.32 = 74,932.26 : x
  2. Step 2: Convert to fraction form
    138,594.48/191,260.32 = 74,932.26/x
  3. Step 3: Cross multiply
    138,594.48x = 191,260.32 × 74,932.26
  4. Step 4: Simplify right side
    138,594.48x = 14,331,568,025.92
  5. Step 5: Solve for x
    x = 14,331,568,025.92/138,594.48
  6. Step 6: Final answer
    x = 103,406.49

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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.