Home / 100,226.10-138,314.26-57,204.73

Finding the Fourth Proportional to 100,226.10, 138,314.26 and 57,204.73

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Solution

The fourth proportional to 100,226.10, 138,314.26 and 57,204.73 is: 78,943.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,226.10 : 138,314.26 = 57,204.73 : x
  2. Step 2: Convert to fraction form
    100,226.10/138,314.26 = 57,204.73/x
  3. Step 3: Cross multiply
    100,226.10x = 138,314.26 × 57,204.73
  4. Step 4: Simplify right side
    100,226.10x = 7,912,229,898.45
  5. Step 5: Solve for x
    x = 7,912,229,898.45/100,226.10
  6. Step 6: Final answer
    x = 78,943.81

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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.