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Finding the Fourth Proportional to 180,506.28, 270,765.70 and 85,687.62

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Solution

The fourth proportional to 180,506.28, 270,765.70 and 85,687.62 is: 128,534.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,506.28 : 270,765.70 = 85,687.62 : x
  2. Step 2: Convert to fraction form
    180,506.28/270,765.70 = 85,687.62/x
  3. Step 3: Cross multiply
    180,506.28x = 270,765.70 × 85,687.62
  4. Step 4: Simplify right side
    180,506.28x = 23,201,267,181.04
  5. Step 5: Solve for x
    x = 23,201,267,181.04/180,506.28
  6. Step 6: Final answer
    x = 128,534.40

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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.