Home / 172,445.40-258,676.20-54,120.60

Finding the Fourth Proportional to 172,445.40, 258,676.20 and 54,120.60

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Solution

The fourth proportional to 172,445.40, 258,676.20 and 54,120.60 is: 81,183.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,445.40 : 258,676.20 = 54,120.60 : x
  2. Step 2: Convert to fraction form
    172,445.40/258,676.20 = 54,120.60/x
  3. Step 3: Cross multiply
    172,445.40x = 258,676.20 × 54,120.60
  4. Step 4: Simplify right side
    172,445.40x = 13,999,711,149.72
  5. Step 5: Solve for x
    x = 13,999,711,149.72/172,445.40
  6. Step 6: Final answer
    x = 81,183.44

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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.