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Finding the Fourth Proportional to 180,404.31, 270,600.88 and 85,702.65

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Solution

The fourth proportional to 180,404.31, 270,600.88 and 85,702.65 is: 128,551.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,404.31 : 270,600.88 = 85,702.65 : x
  2. Step 2: Convert to fraction form
    180,404.31/270,600.88 = 85,702.65/x
  3. Step 3: Cross multiply
    180,404.31x = 270,600.88 × 85,702.65
  4. Step 4: Simplify right side
    180,404.31x = 23,191,212,508.33
  5. Step 5: Solve for x
    x = 23,191,212,508.33/180,404.31
  6. Step 6: Final answer
    x = 128,551.32

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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.