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Finding the Fourth Proportional to 199,262.76, 274,980.81 and 108,618.72

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Solution

The fourth proportional to 199,262.76, 274,980.81 and 108,618.72 is: 149,892.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,262.76 : 274,980.81 = 108,618.72 : x
  2. Step 2: Convert to fraction form
    199,262.76/274,980.81 = 108,618.72/x
  3. Step 3: Cross multiply
    199,262.76x = 274,980.81 × 108,618.72
  4. Step 4: Simplify right side
    199,262.76x = 29,868,063,606.76
  5. Step 5: Solve for x
    x = 29,868,063,606.76/199,262.76
  6. Step 6: Final answer
    x = 149,892.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.