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Finding the Fourth Proportional to 124,697.88, 171,960.17 and 76,941.09

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Solution

The fourth proportional to 124,697.88, 171,960.17 and 76,941.09 is: 106,102.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,697.88 : 171,960.17 = 76,941.09 : x
  2. Step 2: Convert to fraction form
    124,697.88/171,960.17 = 76,941.09/x
  3. Step 3: Cross multiply
    124,697.88x = 171,960.17 × 76,941.09
  4. Step 4: Simplify right side
    124,697.88x = 13,230,802,531.68
  5. Step 5: Solve for x
    x = 13,230,802,531.68/124,697.88
  6. Step 6: Final answer
    x = 106,102.87

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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.