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Finding the Fourth Proportional to 169,576.36, 254,502.78 and 86,494.12

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Solution

The fourth proportional to 169,576.36, 254,502.78 and 86,494.12 is: 129,811.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,576.36 : 254,502.78 = 86,494.12 : x
  2. Step 2: Convert to fraction form
    169,576.36/254,502.78 = 86,494.12/x
  3. Step 3: Cross multiply
    169,576.36x = 254,502.78 × 86,494.12
  4. Step 4: Simplify right side
    169,576.36x = 22,012,993,993.65
  5. Step 5: Solve for x
    x = 22,012,993,993.65/169,576.36
  6. Step 6: Final answer
    x = 129,811.69

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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.