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Finding the Fourth Proportional to 172,812.20, 259,218.30 and 48,153.20

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Solution

The fourth proportional to 172,812.20, 259,218.30 and 48,153.20 is: 72,229.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,812.20 : 259,218.30 = 48,153.20 : x
  2. Step 2: Convert to fraction form
    172,812.20/259,218.30 = 48,153.20/x
  3. Step 3: Cross multiply
    172,812.20x = 259,218.30 × 48,153.20
  4. Step 4: Simplify right side
    172,812.20x = 12,482,190,643.56
  5. Step 5: Solve for x
    x = 12,482,190,643.56/172,812.20
  6. Step 6: Final answer
    x = 72,229.80

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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.