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Finding the Fourth Proportional to 179,287.70, 268,931.55 and 74,311.70

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Solution

The fourth proportional to 179,287.70, 268,931.55 and 74,311.70 is: 111,467.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,287.70 : 268,931.55 = 74,311.70 : x
  2. Step 2: Convert to fraction form
    179,287.70/268,931.55 = 74,311.70/x
  3. Step 3: Cross multiply
    179,287.70x = 268,931.55 × 74,311.70
  4. Step 4: Simplify right side
    179,287.70x = 19,984,760,664.14
  5. Step 5: Solve for x
    x = 19,984,760,664.14/179,287.70
  6. Step 6: Final answer
    x = 111,467.55

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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.