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Finding the Fourth Proportional to 172,010.80, 257,578.80 and 164,137.60

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Solution

The fourth proportional to 172,010.80, 257,578.80 and 164,137.60 is: 245,789.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,010.80 : 257,578.80 = 164,137.60 : x
  2. Step 2: Convert to fraction form
    172,010.80/257,578.80 = 164,137.60/x
  3. Step 3: Cross multiply
    172,010.80x = 257,578.80 × 164,137.60
  4. Step 4: Simplify right side
    172,010.80x = 42,278,366,042.88
  5. Step 5: Solve for x
    x = 42,278,366,042.88/172,010.80
  6. Step 6: Final answer
    x = 245,789.02

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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.