Home / 81,286.13-112,213.21-61,150.68

Finding the Fourth Proportional to 81,286.13, 112,213.21 and 61,150.68

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Solution

The fourth proportional to 81,286.13, 112,213.21 and 61,150.68 is: 84,416.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,286.13 : 112,213.21 = 61,150.68 : x
  2. Step 2: Convert to fraction form
    81,286.13/112,213.21 = 61,150.68/x
  3. Step 3: Cross multiply
    81,286.13x = 112,213.21 × 61,150.68
  4. Step 4: Simplify right side
    81,286.13x = 6,861,914,096.48
  5. Step 5: Solve for x
    x = 6,861,914,096.48/81,286.13
  6. Step 6: Final answer
    x = 84,416.79

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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.