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Finding the Fourth Proportional to 102,740.52, 154,143.72 and 43,625.94

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Solution

The fourth proportional to 102,740.52, 154,143.72 and 43,625.94 is: 65,452.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,740.52 : 154,143.72 = 43,625.94 : x
  2. Step 2: Convert to fraction form
    102,740.52/154,143.72 = 43,625.94/x
  3. Step 3: Cross multiply
    102,740.52x = 154,143.72 × 43,625.94
  4. Step 4: Simplify right side
    102,740.52x = 6,724,664,680.10
  5. Step 5: Solve for x
    x = 6,724,664,680.10/102,740.52
  6. Step 6: Final answer
    x = 65,452.90

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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.