Home / 100,401.24-138,552.40-57,380.24

Finding the Fourth Proportional to 100,401.24, 138,552.40 and 57,380.24

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Solution

The fourth proportional to 100,401.24, 138,552.40 and 57,380.24 is: 79,183.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,401.24 : 138,552.40 = 57,380.24 : x
  2. Step 2: Convert to fraction form
    100,401.24/138,552.40 = 57,380.24/x
  3. Step 3: Cross multiply
    100,401.24x = 138,552.40 × 57,380.24
  4. Step 4: Simplify right side
    100,401.24x = 7,950,169,964.58
  5. Step 5: Solve for x
    x = 7,950,169,964.58/100,401.24
  6. Step 6: Final answer
    x = 79,183.98

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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.