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Finding the Fourth Proportional to 192,492.80, 288,652.80 and 74,124.80

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Solution

The fourth proportional to 192,492.80, 288,652.80 and 74,124.80 is: 111,153.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,492.80 : 288,652.80 = 74,124.80 : x
  2. Step 2: Convert to fraction form
    192,492.80/288,652.80 = 74,124.80/x
  3. Step 3: Cross multiply
    192,492.80x = 288,652.80 × 74,124.80
  4. Step 4: Simplify right side
    192,492.80x = 21,396,331,069.44
  5. Step 5: Solve for x
    x = 21,396,331,069.44/192,492.80
  6. Step 6: Final answer
    x = 111,153.93

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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.