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Finding the Fourth Proportional to 167,209.91, 230,745.94 and 90,729.12

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Solution

The fourth proportional to 167,209.91, 230,745.94 and 90,729.12 is: 125,204.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,209.91 : 230,745.94 = 90,729.12 : x
  2. Step 2: Convert to fraction form
    167,209.91/230,745.94 = 90,729.12/x
  3. Step 3: Cross multiply
    167,209.91x = 230,745.94 × 90,729.12
  4. Step 4: Simplify right side
    167,209.91x = 20,935,376,079.77
  5. Step 5: Solve for x
    x = 20,935,376,079.77/167,209.91
  6. Step 6: Final answer
    x = 125,204.16

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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.