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Finding the Fourth Proportional to 123,216.60, 170,039.93 and 68,027.70

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Solution

The fourth proportional to 123,216.60, 170,039.93 and 68,027.70 is: 93,878.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,216.60 : 170,039.93 = 68,027.70 : x
  2. Step 2: Convert to fraction form
    123,216.60/170,039.93 = 68,027.70/x
  3. Step 3: Cross multiply
    123,216.60x = 170,039.93 × 68,027.70
  4. Step 4: Simplify right side
    123,216.60x = 11,567,425,005.92
  5. Step 5: Solve for x
    x = 11,567,425,005.92/123,216.60
  6. Step 6: Final answer
    x = 93,878.79

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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.