Home / 180,765.28-270,968.46-85,828.60

Finding the Fourth Proportional to 180,765.28, 270,968.46 and 85,828.60

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Solution

The fourth proportional to 180,765.28, 270,968.46 and 85,828.60 is: 128,657.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,765.28 : 270,968.46 = 85,828.60 : x
  2. Step 2: Convert to fraction form
    180,765.28/270,968.46 = 85,828.60/x
  3. Step 3: Cross multiply
    180,765.28x = 270,968.46 × 85,828.60
  4. Step 4: Simplify right side
    180,765.28x = 23,256,843,565.96
  5. Step 5: Solve for x
    x = 23,256,843,565.96/180,765.28
  6. Step 6: Final answer
    x = 128,657.69

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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.