Home / 135,282.66-186,765.15-81,581.28

Finding the Fourth Proportional to 135,282.66, 186,765.15 and 81,581.28

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Solution

The fourth proportional to 135,282.66, 186,765.15 and 81,581.28 is: 112,627.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,282.66 : 186,765.15 = 81,581.28 : x
  2. Step 2: Convert to fraction form
    135,282.66/186,765.15 = 81,581.28/x
  3. Step 3: Cross multiply
    135,282.66x = 186,765.15 × 81,581.28
  4. Step 4: Simplify right side
    135,282.66x = 15,236,539,996.39
  5. Step 5: Solve for x
    x = 15,236,539,996.39/135,282.66
  6. Step 6: Final answer
    x = 112,627.44

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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.