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Finding the Fourth Proportional to 172,100.20, 258,150.30 and 45,740.20

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Solution

The fourth proportional to 172,100.20, 258,150.30 and 45,740.20 is: 68,610.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,100.20 : 258,150.30 = 45,740.20 : x
  2. Step 2: Convert to fraction form
    172,100.20/258,150.30 = 45,740.20/x
  3. Step 3: Cross multiply
    172,100.20x = 258,150.30 × 45,740.20
  4. Step 4: Simplify right side
    172,100.20x = 11,807,846,352.06
  5. Step 5: Solve for x
    x = 11,807,846,352.06/172,100.20
  6. Step 6: Final answer
    x = 68,610.30

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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.