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Finding the Fourth Proportional to 179,189.80, 268,554.30 and 137,429.80

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Solution

The fourth proportional to 179,189.80, 268,554.30 and 137,429.80 is: 205,967.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,189.80 : 268,554.30 = 137,429.80 : x
  2. Step 2: Convert to fraction form
    179,189.80/268,554.30 = 137,429.80/x
  3. Step 3: Cross multiply
    179,189.80x = 268,554.30 × 137,429.80
  4. Step 4: Simplify right side
    179,189.80x = 36,907,363,738.14
  5. Step 5: Solve for x
    x = 36,907,363,738.14/179,189.80
  6. Step 6: Final answer
    x = 205,967.99

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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.