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Finding the Fourth Proportional to 172,961.40, 259,442.10 and 60,768.30

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Solution

The fourth proportional to 172,961.40, 259,442.10 and 60,768.30 is: 91,152.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,961.40 : 259,442.10 = 60,768.30 : x
  2. Step 2: Convert to fraction form
    172,961.40/259,442.10 = 60,768.30/x
  3. Step 3: Cross multiply
    172,961.40x = 259,442.10 × 60,768.30
  4. Step 4: Simplify right side
    172,961.40x = 15,765,855,365.43
  5. Step 5: Solve for x
    x = 15,765,855,365.43/172,961.40
  6. Step 6: Final answer
    x = 91,152.45

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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.