Home / 135,043.20-186,321.68-77,679.52

Finding the Fourth Proportional to 135,043.20, 186,321.68 and 77,679.52

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Solution

The fourth proportional to 135,043.20, 186,321.68 and 77,679.52 is: 107,175.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,043.20 : 186,321.68 = 77,679.52 : x
  2. Step 2: Convert to fraction form
    135,043.20/186,321.68 = 77,679.52/x
  3. Step 3: Cross multiply
    135,043.20x = 186,321.68 × 77,679.52
  4. Step 4: Simplify right side
    135,043.20x = 14,473,378,667.99
  5. Step 5: Solve for x
    x = 14,473,378,667.99/135,043.20
  6. Step 6: Final answer
    x = 107,175.92

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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.