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Finding the Fourth Proportional to 123,910.56, 170,999.10 and 67,325.58

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Solution

The fourth proportional to 123,910.56, 170,999.10 and 67,325.58 is: 92,910.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,910.56 : 170,999.10 = 67,325.58 : x
  2. Step 2: Convert to fraction form
    123,910.56/170,999.10 = 67,325.58/x
  3. Step 3: Cross multiply
    123,910.56x = 170,999.10 × 67,325.58
  4. Step 4: Simplify right side
    123,910.56x = 11,512,613,586.98
  5. Step 5: Solve for x
    x = 11,512,613,586.98/123,910.56
  6. Step 6: Final answer
    x = 92,910.67

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1.5x scale

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.