Home / 135,388.24-186,855.44-78,016.39

Finding the Fourth Proportional to 135,388.24, 186,855.44 and 78,016.39

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Solution

The fourth proportional to 135,388.24, 186,855.44 and 78,016.39 is: 107,673.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,388.24 : 186,855.44 = 78,016.39 : x
  2. Step 2: Convert to fraction form
    135,388.24/186,855.44 = 78,016.39/x
  3. Step 3: Cross multiply
    135,388.24x = 186,855.44 × 78,016.39
  4. Step 4: Simplify right side
    135,388.24x = 14,577,786,880.66
  5. Step 5: Solve for x
    x = 14,577,786,880.66/135,388.24
  6. Step 6: Final answer
    x = 107,673.95

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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.