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Finding the Fourth Proportional to 173,213.40, 259,820.10 and 84,421.20

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Solution

The fourth proportional to 173,213.40, 259,820.10 and 84,421.20 is: 126,631.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,213.40 : 259,820.10 = 84,421.20 : x
  2. Step 2: Convert to fraction form
    173,213.40/259,820.10 = 84,421.20/x
  3. Step 3: Cross multiply
    173,213.40x = 259,820.10 × 84,421.20
  4. Step 4: Simplify right side
    173,213.40x = 21,934,324,626.12
  5. Step 5: Solve for x
    x = 21,934,324,626.12/173,213.40
  6. Step 6: Final answer
    x = 126,631.80

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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.