Home / 100,396.28-138,550.68-55,076.16

Finding the Fourth Proportional to 100,396.28, 138,550.68 and 55,076.16

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Solution

The fourth proportional to 100,396.28, 138,550.68 and 55,076.16 is: 76,007.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,396.28 : 138,550.68 = 55,076.16 : x
  2. Step 2: Convert to fraction form
    100,396.28/138,550.68 = 55,076.16/x
  3. Step 3: Cross multiply
    100,396.28x = 138,550.68 × 55,076.16
  4. Step 4: Simplify right side
    100,396.28x = 7,630,839,419.79
  5. Step 5: Solve for x
    x = 7,630,839,419.79/100,396.28
  6. Step 6: Final answer
    x = 76,007.20

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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.