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Finding the Fourth Proportional to 108,714.20, 162,917.70 and 80,413.40

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Solution

The fourth proportional to 108,714.20, 162,917.70 and 80,413.40 is: 120,506.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,714.20 : 162,917.70 = 80,413.40 : x
  2. Step 2: Convert to fraction form
    108,714.20/162,917.70 = 80,413.40/x
  3. Step 3: Cross multiply
    108,714.20x = 162,917.70 × 80,413.40
  4. Step 4: Simplify right side
    108,714.20x = 13,100,766,177.18
  5. Step 5: Solve for x
    x = 13,100,766,177.18/108,714.20
  6. Step 6: Final answer
    x = 120,506.49

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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.