Home / 107,977.33-148,928.39-79,287.99

Finding the Fourth Proportional to 107,977.33, 148,928.39 and 79,287.99

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Solution

The fourth proportional to 107,977.33, 148,928.39 and 79,287.99 is: 109,358.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,977.33 : 148,928.39 = 79,287.99 : x
  2. Step 2: Convert to fraction form
    107,977.33/148,928.39 = 79,287.99/x
  3. Step 3: Cross multiply
    107,977.33x = 148,928.39 × 79,287.99
  4. Step 4: Simplify right side
    107,977.33x = 11,808,231,555.95
  5. Step 5: Solve for x
    x = 11,808,231,555.95/107,977.33
  6. Step 6: Final answer
    x = 109,358.43

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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.