Home / 84,145.12-115,884.05-82,308.04

Finding the Fourth Proportional to 84,145.12, 115,884.05 and 82,308.04

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Solution

The fourth proportional to 84,145.12, 115,884.05 and 82,308.04 is: 113,354.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,145.12 : 115,884.05 = 82,308.04 : x
  2. Step 2: Convert to fraction form
    84,145.12/115,884.05 = 82,308.04/x
  3. Step 3: Cross multiply
    84,145.12x = 115,884.05 × 82,308.04
  4. Step 4: Simplify right side
    84,145.12x = 9,538,188,321.51
  5. Step 5: Solve for x
    x = 9,538,188,321.51/84,145.12
  6. Step 6: Final answer
    x = 113,354.03

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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.