Home / 100,433.28-138,593.28-55,110.12

Finding the Fourth Proportional to 100,433.28, 138,593.28 and 55,110.12

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Solution

The fourth proportional to 100,433.28, 138,593.28 and 55,110.12 is: 76,049.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,433.28 : 138,593.28 = 55,110.12 : x
  2. Step 2: Convert to fraction form
    100,433.28/138,593.28 = 55,110.12/x
  3. Step 3: Cross multiply
    100,433.28x = 138,593.28 × 55,110.12
  4. Step 4: Simplify right side
    100,433.28x = 7,637,892,291.99
  5. Step 5: Solve for x
    x = 7,637,892,291.99/100,433.28
  6. Step 6: Final answer
    x = 76,049.42

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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.