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Finding the Fourth Proportional to 66,185, 99,278.22 and 16,937

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Solution

The fourth proportional to 66,185, 99,278.22 and 16,937 is: 25,405.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,185 : 99,278.22 = 16,937 : x
  2. Step 2: Convert to fraction form
    66,185/99,278.22 = 16,937/x
  3. Step 3: Cross multiply
    66,185x = 99,278.22 × 16,937
  4. Step 4: Simplify right side
    66,185x = 1,681,475,212.14
  5. Step 5: Solve for x
    x = 1,681,475,212.14/66,185
  6. Step 6: Final answer
    x = 25,405.68

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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.