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Finding the Fourth Proportional to 172,699.83, 259,084.68 and 72,860.24

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Solution

The fourth proportional to 172,699.83, 259,084.68 and 72,860.24 is: 109,305.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,699.83 : 259,084.68 = 72,860.24 : x
  2. Step 2: Convert to fraction form
    172,699.83/259,084.68 = 72,860.24/x
  3. Step 3: Cross multiply
    172,699.83x = 259,084.68 × 72,860.24
  4. Step 4: Simplify right side
    172,699.83x = 18,876,972,339.61
  5. Step 5: Solve for x
    x = 18,876,972,339.61/172,699.83
  6. Step 6: Final answer
    x = 109,305.10

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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.