Home / 112,310.21-154,986.91-61,322.78

Finding the Fourth Proportional to 112,310.21, 154,986.91 and 61,322.78

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Solution

The fourth proportional to 112,310.21, 154,986.91 and 61,322.78 is: 84,624.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,310.21 : 154,986.91 = 61,322.78 : x
  2. Step 2: Convert to fraction form
    112,310.21/154,986.91 = 61,322.78/x
  3. Step 3: Cross multiply
    112,310.21x = 154,986.91 × 61,322.78
  4. Step 4: Simplify right side
    112,310.21x = 9,504,228,418.97
  5. Step 5: Solve for x
    x = 9,504,228,418.97/112,310.21
  6. Step 6: Final answer
    x = 84,624.79

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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.