Home / 100,083.26-138,113.71-54,760.72

Finding the Fourth Proportional to 100,083.26, 138,113.71 and 54,760.72

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Solution

The fourth proportional to 100,083.26, 138,113.71 and 54,760.72 is: 75,569.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,083.26 : 138,113.71 = 54,760.72 : x
  2. Step 2: Convert to fraction form
    100,083.26/138,113.71 = 54,760.72/x
  3. Step 3: Cross multiply
    100,083.26x = 138,113.71 × 54,760.72
  4. Step 4: Simplify right side
    100,083.26x = 7,563,206,201.47
  5. Step 5: Solve for x
    x = 7,563,206,201.47/100,083.26
  6. Step 6: Final answer
    x = 75,569.14

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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.