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Finding the Fourth Proportional to 173,312.20, 259,968.30 and 80,000.20

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Solution

The fourth proportional to 173,312.20, 259,968.30 and 80,000.20 is: 120,000.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,312.20 : 259,968.30 = 80,000.20 : x
  2. Step 2: Convert to fraction form
    173,312.20/259,968.30 = 80,000.20/x
  3. Step 3: Cross multiply
    173,312.20x = 259,968.30 × 80,000.20
  4. Step 4: Simplify right side
    173,312.20x = 20,797,515,993.66
  5. Step 5: Solve for x
    x = 20,797,515,993.66/173,312.20
  6. Step 6: Final answer
    x = 120,000.30

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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.