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Finding the Fourth Proportional to 172,149.10, 258,203.06 and 45,798.60

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Solution

The fourth proportional to 172,149.10, 258,203.06 and 45,798.60 is: 68,692.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,149.10 : 258,203.06 = 45,798.60 : x
  2. Step 2: Convert to fraction form
    172,149.10/258,203.06 = 45,798.60/x
  3. Step 3: Cross multiply
    172,149.10x = 258,203.06 × 45,798.60
  4. Step 4: Simplify right side
    172,149.10x = 11,825,338,663.72
  5. Step 5: Solve for x
    x = 11,825,338,663.72/172,149.10
  6. Step 6: Final answer
    x = 68,692.42

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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.