Home / 132,709.32-183,136.68-72,279

Finding the Fourth Proportional to 132,709.32, 183,136.68 and 72,279

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Solution

The fourth proportional to 132,709.32, 183,136.68 and 72,279 is: 99,743.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,709.32 : 183,136.68 = 72,279 : x
  2. Step 2: Convert to fraction form
    132,709.32/183,136.68 = 72,279/x
  3. Step 3: Cross multiply
    132,709.32x = 183,136.68 × 72,279
  4. Step 4: Simplify right side
    132,709.32x = 13,236,936,093.72
  5. Step 5: Solve for x
    x = 13,236,936,093.72/132,709.32
  6. Step 6: Final answer
    x = 99,743.83

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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.