Home / 135,444.63-186,914.97-81,719.27

Finding the Fourth Proportional to 135,444.63, 186,914.97 and 81,719.27

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Solution

The fourth proportional to 135,444.63, 186,914.97 and 81,719.27 is: 112,773.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,444.63 : 186,914.97 = 81,719.27 : x
  2. Step 2: Convert to fraction form
    135,444.63/186,914.97 = 81,719.27/x
  3. Step 3: Cross multiply
    135,444.63x = 186,914.97 × 81,719.27
  4. Step 4: Simplify right side
    135,444.63x = 15,274,553,965.90
  5. Step 5: Solve for x
    x = 15,274,553,965.90/135,444.63
  6. Step 6: Final answer
    x = 112,773.42

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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.