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Finding the Fourth Proportional to 124,310.40, 171,542.40 and 67,721.60

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Solution

The fourth proportional to 124,310.40, 171,542.40 and 67,721.60 is: 93,452.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,310.40 : 171,542.40 = 67,721.60 : x
  2. Step 2: Convert to fraction form
    124,310.40/171,542.40 = 67,721.60/x
  3. Step 3: Cross multiply
    124,310.40x = 171,542.40 × 67,721.60
  4. Step 4: Simplify right side
    124,310.40x = 11,617,125,795.84
  5. Step 5: Solve for x
    x = 11,617,125,795.84/124,310.40
  6. Step 6: Final answer
    x = 93,452.57

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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.