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Finding the Fourth Proportional to 123,494.99, 170,423.26 and 66,906.37

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Solution

The fourth proportional to 123,494.99, 170,423.26 and 66,906.37 is: 92,330.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,494.99 : 170,423.26 = 66,906.37 : x
  2. Step 2: Convert to fraction form
    123,494.99/170,423.26 = 66,906.37/x
  3. Step 3: Cross multiply
    123,494.99x = 170,423.26 × 66,906.37
  4. Step 4: Simplify right side
    123,494.99x = 11,402,401,096.84
  5. Step 5: Solve for x
    x = 11,402,401,096.84/123,494.99
  6. Step 6: Final answer
    x = 92,330.88

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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.