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Finding the Fourth Proportional to 157,997.58, 218,037.44 and 86,377.61

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Solution

The fourth proportional to 157,997.58, 218,037.44 and 86,377.61 is: 119,201.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,997.58 : 218,037.44 = 86,377.61 : x
  2. Step 2: Convert to fraction form
    157,997.58/218,037.44 = 86,377.61/x
  3. Step 3: Cross multiply
    157,997.58x = 218,037.44 × 86,377.61
  4. Step 4: Simplify right side
    157,997.58x = 18,833,551,435.64
  5. Step 5: Solve for x
    x = 18,833,551,435.64/157,997.58
  6. Step 6: Final answer
    x = 119,201.52

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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.