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Finding the Fourth Proportional to 123,896.70, 170,977.65 and 67,308.12

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Solution

The fourth proportional to 123,896.70, 170,977.65 and 67,308.12 is: 92,885.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,896.70 : 170,977.65 = 67,308.12 : x
  2. Step 2: Convert to fraction form
    123,896.70/170,977.65 = 67,308.12/x
  3. Step 3: Cross multiply
    123,896.70x = 170,977.65 × 67,308.12
  4. Step 4: Simplify right side
    123,896.70x = 11,508,184,183.52
  5. Step 5: Solve for x
    x = 11,508,184,183.52/123,896.70
  6. Step 6: Final answer
    x = 92,885.32

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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.