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Finding the Fourth Proportional to 123,880.50, 170,958.21 and 67,291.86

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Solution

The fourth proportional to 123,880.50, 170,958.21 and 67,291.86 is: 92,864.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,880.50 : 170,958.21 = 67,291.86 : x
  2. Step 2: Convert to fraction form
    123,880.50/170,958.21 = 67,291.86/x
  3. Step 3: Cross multiply
    123,880.50x = 170,958.21 × 67,291.86
  4. Step 4: Simplify right side
    123,880.50x = 11,504,095,933.17
  5. Step 5: Solve for x
    x = 11,504,095,933.17/123,880.50
  6. Step 6: Final answer
    x = 92,864.46

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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.