Home / 109,318.16-164,055-84,383.12

Finding the Fourth Proportional to 109,318.16, 164,055 and 84,383.12

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Solution

The fourth proportional to 109,318.16, 164,055 and 84,383.12 is: 126,634.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,318.16 : 164,055 = 84,383.12 : x
  2. Step 2: Convert to fraction form
    109,318.16/164,055 = 84,383.12/x
  3. Step 3: Cross multiply
    109,318.16x = 164,055 × 84,383.12
  4. Step 4: Simplify right side
    109,318.16x = 13,843,472,751.60
  5. Step 5: Solve for x
    x = 13,843,472,751.60/109,318.16
  6. Step 6: Final answer
    x = 126,634.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.