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Finding the Fourth Proportional to 112,177, 154,804.26 and 61,876

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Solution

The fourth proportional to 112,177, 154,804.26 and 61,876 is: 85,388.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,177 : 154,804.26 = 61,876 : x
  2. Step 2: Convert to fraction form
    112,177/154,804.26 = 61,876/x
  3. Step 3: Cross multiply
    112,177x = 154,804.26 × 61,876
  4. Step 4: Simplify right side
    112,177x = 9,578,668,391.76
  5. Step 5: Solve for x
    x = 9,578,668,391.76/112,177
  6. Step 6: Final answer
    x = 85,388.88

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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.