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Finding the Fourth Proportional to 124,188, 171,379.44 and 67,599.78

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Solution

The fourth proportional to 124,188, 171,379.44 and 67,599.78 is: 93,287.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,188 : 171,379.44 = 67,599.78 : x
  2. Step 2: Convert to fraction form
    124,188/171,379.44 = 67,599.78/x
  3. Step 3: Cross multiply
    124,188x = 171,379.44 × 67,599.78
  4. Step 4: Simplify right side
    124,188x = 11,585,212,440.52
  5. Step 5: Solve for x
    x = 11,585,212,440.52/124,188
  6. Step 6: Final answer
    x = 93,287.70

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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.