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Finding the Fourth Proportional to 172,830.30, 259,245.45 and 48,171.30

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Solution

The fourth proportional to 172,830.30, 259,245.45 and 48,171.30 is: 72,256.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,830.30 : 259,245.45 = 48,171.30 : x
  2. Step 2: Convert to fraction form
    172,830.30/259,245.45 = 48,171.30/x
  3. Step 3: Cross multiply
    172,830.30x = 259,245.45 × 48,171.30
  4. Step 4: Simplify right side
    172,830.30x = 12,488,190,345.59
  5. Step 5: Solve for x
    x = 12,488,190,345.59/172,830.30
  6. Step 6: Final answer
    x = 72,256.95

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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.