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Finding the Fourth Proportional to 167,178.70, 230,661.97 and 99,139.11

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Solution

The fourth proportional to 167,178.70, 230,661.97 and 99,139.11 is: 136,785.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,178.70 : 230,661.97 = 99,139.11 : x
  2. Step 2: Convert to fraction form
    167,178.70/230,661.97 = 99,139.11/x
  3. Step 3: Cross multiply
    167,178.70x = 230,661.97 × 99,139.11
  4. Step 4: Simplify right side
    167,178.70x = 22,867,622,416.65
  5. Step 5: Solve for x
    x = 22,867,622,416.65/167,178.70
  6. Step 6: Final answer
    x = 136,785.50

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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.