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Finding the Fourth Proportional to 136,235.80, 204,329.40 and 86,226.40

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Solution

The fourth proportional to 136,235.80, 204,329.40 and 86,226.40 is: 129,324.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,235.80 : 204,329.40 = 86,226.40 : x
  2. Step 2: Convert to fraction form
    136,235.80/204,329.40 = 86,226.40/x
  3. Step 3: Cross multiply
    136,235.80x = 204,329.40 × 86,226.40
  4. Step 4: Simplify right side
    136,235.80x = 17,618,588,576.16
  5. Step 5: Solve for x
    x = 17,618,588,576.16/136,235.80
  6. Step 6: Final answer
    x = 129,324.22

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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.