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Finding the Fourth Proportional to 172,801.20, 259,201.80 and 48,142.20

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Solution

The fourth proportional to 172,801.20, 259,201.80 and 48,142.20 is: 72,213.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,801.20 : 259,201.80 = 48,142.20 : x
  2. Step 2: Convert to fraction form
    172,801.20/259,201.80 = 48,142.20/x
  3. Step 3: Cross multiply
    172,801.20x = 259,201.80 × 48,142.20
  4. Step 4: Simplify right side
    172,801.20x = 12,478,544,895.96
  5. Step 5: Solve for x
    x = 12,478,544,895.96/172,801.20
  6. Step 6: Final answer
    x = 72,213.30

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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.