Home / 156,221.98-215,586-84,601.78

Finding the Fourth Proportional to 156,221.98, 215,586 and 84,601.78

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Solution

The fourth proportional to 156,221.98, 215,586 and 84,601.78 is: 116,750.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,221.98 : 215,586 = 84,601.78 : x
  2. Step 2: Convert to fraction form
    156,221.98/215,586 = 84,601.78/x
  3. Step 3: Cross multiply
    156,221.98x = 215,586 × 84,601.78
  4. Step 4: Simplify right side
    156,221.98x = 18,238,958,804.12
  5. Step 5: Solve for x
    x = 18,238,958,804.12/156,221.98
  6. Step 6: Final answer
    x = 116,750.27

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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.