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Finding the Fourth Proportional to 123,424.74, 170,326.26 and 69,709.86

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Solution

The fourth proportional to 123,424.74, 170,326.26 and 69,709.86 is: 96,199.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,424.74 : 170,326.26 = 69,709.86 : x
  2. Step 2: Convert to fraction form
    123,424.74/170,326.26 = 69,709.86/x
  3. Step 3: Cross multiply
    123,424.74x = 170,326.26 × 69,709.86
  4. Step 4: Simplify right side
    123,424.74x = 11,873,419,738.92
  5. Step 5: Solve for x
    x = 11,873,419,738.92/123,424.74
  6. Step 6: Final answer
    x = 96,199.67

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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.