Home / 138,640.01-191,323.22-74,977.79

Finding the Fourth Proportional to 138,640.01, 191,323.22 and 74,977.79

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Solution

The fourth proportional to 138,640.01, 191,323.22 and 74,977.79 is: 103,469.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,640.01 : 191,323.22 = 74,977.79 : x
  2. Step 2: Convert to fraction form
    138,640.01/191,323.22 = 74,977.79/x
  3. Step 3: Cross multiply
    138,640.01x = 191,323.22 × 74,977.79
  4. Step 4: Simplify right side
    138,640.01x = 14,344,990,879.78
  5. Step 5: Solve for x
    x = 14,344,990,879.78/138,640.01
  6. Step 6: Final answer
    x = 103,469.35

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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.