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Finding the Fourth Proportional to 123,969.44, 171,102.64 and 73,658.72

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Solution

The fourth proportional to 123,969.44, 171,102.64 and 73,658.72 is: 101,663.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,969.44 : 171,102.64 = 73,658.72 : x
  2. Step 2: Convert to fraction form
    123,969.44/171,102.64 = 73,658.72/x
  3. Step 3: Cross multiply
    123,969.44x = 171,102.64 × 73,658.72
  4. Step 4: Simplify right side
    123,969.44x = 12,603,201,451.02
  5. Step 5: Solve for x
    x = 12,603,201,451.02/123,969.44
  6. Step 6: Final answer
    x = 101,663.78

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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.