Home / 100,204.74-150,380.01-80,718.57

Finding the Fourth Proportional to 100,204.74, 150,380.01 and 80,718.57

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Solution

The fourth proportional to 100,204.74, 150,380.01 and 80,718.57 is: 121,136.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,204.74 : 150,380.01 = 80,718.57 : x
  2. Step 2: Convert to fraction form
    100,204.74/150,380.01 = 80,718.57/x
  3. Step 3: Cross multiply
    100,204.74x = 150,380.01 × 80,718.57
  4. Step 4: Simplify right side
    100,204.74x = 12,138,459,363.79
  5. Step 5: Solve for x
    x = 12,138,459,363.79/100,204.74
  6. Step 6: Final answer
    x = 121,136.58

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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.