Home / 100,342.25-150,586.68-80,856.08

Finding the Fourth Proportional to 100,342.25, 150,586.68 and 80,856.08

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Solution

The fourth proportional to 100,342.25, 150,586.68 and 80,856.08 is: 121,343.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,342.25 : 150,586.68 = 80,856.08 : x
  2. Step 2: Convert to fraction form
    100,342.25/150,586.68 = 80,856.08/x
  3. Step 3: Cross multiply
    100,342.25x = 150,586.68 × 80,856.08
  4. Step 4: Simplify right side
    100,342.25x = 12,175,848,645.01
  5. Step 5: Solve for x
    x = 12,175,848,645.01/100,342.25
  6. Step 6: Final answer
    x = 121,343.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.