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Finding the Fourth Proportional to 99,793.40, 137,667.16 and 67,539.32

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Solution

The fourth proportional to 99,793.40, 137,667.16 and 67,539.32 is: 93,171.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,793.40 : 137,667.16 = 67,539.32 : x
  2. Step 2: Convert to fraction form
    99,793.40/137,667.16 = 67,539.32/x
  3. Step 3: Cross multiply
    99,793.40x = 137,667.16 × 67,539.32
  4. Step 4: Simplify right side
    99,793.40x = 9,297,946,372.73
  5. Step 5: Solve for x
    x = 9,297,946,372.73/99,793.40
  6. Step 6: Final answer
    x = 93,171.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.