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Finding the Fourth Proportional to 68,173.76, 102,124.50 and 54,157.52

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Solution

The fourth proportional to 68,173.76, 102,124.50 and 54,157.52 is: 81,128.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,173.76 : 102,124.50 = 54,157.52 : x
  2. Step 2: Convert to fraction form
    68,173.76/102,124.50 = 54,157.52/x
  3. Step 3: Cross multiply
    68,173.76x = 102,124.50 × 54,157.52
  4. Step 4: Simplify right side
    68,173.76x = 5,530,809,651.24
  5. Step 5: Solve for x
    x = 5,530,809,651.24/68,173.76
  6. Step 6: Final answer
    x = 81,128.13

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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.