Home / 135,023.94-186,348.87-81,336.06

Finding the Fourth Proportional to 135,023.94, 186,348.87 and 81,336.06

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Solution

The fourth proportional to 135,023.94, 186,348.87 and 81,336.06 is: 112,253.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,023.94 : 186,348.87 = 81,336.06 : x
  2. Step 2: Convert to fraction form
    135,023.94/186,348.87 = 81,336.06/x
  3. Step 3: Cross multiply
    135,023.94x = 186,348.87 × 81,336.06
  4. Step 4: Simplify right side
    135,023.94x = 15,156,882,871.25
  5. Step 5: Solve for x
    x = 15,156,882,871.25/135,023.94
  6. Step 6: Final answer
    x = 112,253.30

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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.