Home / 135,314.20-186,808.66-81,612.76

Finding the Fourth Proportional to 135,314.20, 186,808.66 and 81,612.76

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Solution

The fourth proportional to 135,314.20, 186,808.66 and 81,612.76 is: 112,670.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,314.20 : 186,808.66 = 81,612.76 : x
  2. Step 2: Convert to fraction form
    135,314.20/186,808.66 = 81,612.76/x
  3. Step 3: Cross multiply
    135,314.20x = 186,808.66 × 81,612.76
  4. Step 4: Simplify right side
    135,314.20x = 15,245,970,334.50
  5. Step 5: Solve for x
    x = 15,245,970,334.50/135,314.20
  6. Step 6: Final answer
    x = 112,670.88

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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.