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Finding the Fourth Proportional to 172,599.77, 258,934.95 and 72,759.98

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Solution

The fourth proportional to 172,599.77, 258,934.95 and 72,759.98 is: 109,154.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,599.77 : 258,934.95 = 72,759.98 : x
  2. Step 2: Convert to fraction form
    172,599.77/258,934.95 = 72,759.98/x
  3. Step 3: Cross multiply
    172,599.77x = 258,934.95 × 72,759.98
  4. Step 4: Simplify right side
    172,599.77x = 18,840,101,783.30
  5. Step 5: Solve for x
    x = 18,840,101,783.30/172,599.77
  6. Step 6: Final answer
    x = 109,154.85

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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.