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Finding the Fourth Proportional to 178,958.88, 268,396.80 and 79,064.64

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Solution

The fourth proportional to 178,958.88, 268,396.80 and 79,064.64 is: 118,578.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,958.88 : 268,396.80 = 79,064.64 : x
  2. Step 2: Convert to fraction form
    178,958.88/268,396.80 = 79,064.64/x
  3. Step 3: Cross multiply
    178,958.88x = 268,396.80 × 79,064.64
  4. Step 4: Simplify right side
    178,958.88x = 21,220,696,369.15
  5. Step 5: Solve for x
    x = 21,220,696,369.15/178,958.88
  6. Step 6: Final answer
    x = 118,578.62

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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.