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Finding the Fourth Proportional to 167,209.11, 230,747.94 and 90,728.51

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Solution

The fourth proportional to 167,209.11, 230,747.94 and 90,728.51 is: 125,204.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,209.11 : 230,747.94 = 90,728.51 : x
  2. Step 2: Convert to fraction form
    167,209.11/230,747.94 = 90,728.51/x
  3. Step 3: Cross multiply
    167,209.11x = 230,747.94 × 90,728.51
  4. Step 4: Simplify right side
    167,209.11x = 20,935,415,628.03
  5. Step 5: Solve for x
    x = 20,935,415,628.03/167,209.11
  6. Step 6: Final answer
    x = 125,204.99

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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.