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Finding the Fourth Proportional to 111,849.87, 154,349.78 and 61,548.87

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Solution

The fourth proportional to 111,849.87, 154,349.78 and 61,548.87 is: 84,935.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,849.87 : 154,349.78 = 61,548.87 : x
  2. Step 2: Convert to fraction form
    111,849.87/154,349.78 = 61,548.87/x
  3. Step 3: Cross multiply
    111,849.87x = 154,349.78 × 61,548.87
  4. Step 4: Simplify right side
    111,849.87x = 9,500,054,236.00
  5. Step 5: Solve for x
    x = 9,500,054,236.00/111,849.87
  6. Step 6: Final answer
    x = 84,935.76

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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.