Home / 100,021.14-138,028.41-54,698.94

Finding the Fourth Proportional to 100,021.14, 138,028.41 and 54,698.94

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Solution

The fourth proportional to 100,021.14, 138,028.41 and 54,698.94 is: 75,484.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,021.14 : 138,028.41 = 54,698.94 : x
  2. Step 2: Convert to fraction form
    100,021.14/138,028.41 = 54,698.94/x
  3. Step 3: Cross multiply
    100,021.14x = 138,028.41 × 54,698.94
  4. Step 4: Simplify right side
    100,021.14x = 7,550,007,716.89
  5. Step 5: Solve for x
    x = 7,550,007,716.89/100,021.14
  6. Step 6: Final answer
    x = 75,484.12

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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.