Home / 156,198.72-215,557.92-89,136.96

Finding the Fourth Proportional to 156,198.72, 215,557.92 and 89,136.96

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Solution

The fourth proportional to 156,198.72, 215,557.92 and 89,136.96 is: 123,011.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,198.72 : 215,557.92 = 89,136.96 : x
  2. Step 2: Convert to fraction form
    156,198.72/215,557.92 = 89,136.96/x
  3. Step 3: Cross multiply
    156,198.72x = 215,557.92 × 89,136.96
  4. Step 4: Simplify right side
    156,198.72x = 19,214,177,692.72
  5. Step 5: Solve for x
    x = 19,214,177,692.72/156,198.72
  6. Step 6: Final answer
    x = 123,011.11

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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.