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Finding the Fourth Proportional to 123,208.35, 170,027.28 and 69,493.20

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Solution

The fourth proportional to 123,208.35, 170,027.28 and 69,493.20 is: 95,900.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,208.35 : 170,027.28 = 69,493.20 : x
  2. Step 2: Convert to fraction form
    123,208.35/170,027.28 = 69,493.20/x
  3. Step 3: Cross multiply
    123,208.35x = 170,027.28 × 69,493.20
  4. Step 4: Simplify right side
    123,208.35x = 11,815,739,774.50
  5. Step 5: Solve for x
    x = 11,815,739,774.50/123,208.35
  6. Step 6: Final answer
    x = 95,900.48

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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.