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Finding the Fourth Proportional to 172,803.50, 259,220.10 and 48,144.50

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Solution

The fourth proportional to 172,803.50, 259,220.10 and 48,144.50 is: 72,220.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,803.50 : 259,220.10 = 48,144.50 : x
  2. Step 2: Convert to fraction form
    172,803.50/259,220.10 = 48,144.50/x
  3. Step 3: Cross multiply
    172,803.50x = 259,220.10 × 48,144.50
  4. Step 4: Simplify right side
    172,803.50x = 12,480,022,104.45
  5. Step 5: Solve for x
    x = 12,480,022,104.45/172,803.50
  6. Step 6: Final answer
    x = 72,220.89

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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.