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Finding the Fourth Proportional to 180,722.67, 270,715.86 and 85,664.73

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Solution

The fourth proportional to 180,722.67, 270,715.86 and 85,664.73 is: 128,322.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,722.67 : 270,715.86 = 85,664.73 : x
  2. Step 2: Convert to fraction form
    180,722.67/270,715.86 = 85,664.73/x
  3. Step 3: Cross multiply
    180,722.67x = 270,715.86 × 85,664.73
  4. Step 4: Simplify right side
    180,722.67x = 23,190,801,053.62
  5. Step 5: Solve for x
    x = 23,190,801,053.62/180,722.67
  6. Step 6: Final answer
    x = 128,322.59

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1.5x scale

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.