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Finding the Fourth Proportional to 111,741.54, 154,203.39 and 61,440.54

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Solution

The fourth proportional to 111,741.54, 154,203.39 and 61,440.54 is: 84,787.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,741.54 : 154,203.39 = 61,440.54 : x
  2. Step 2: Convert to fraction form
    111,741.54/154,203.39 = 61,440.54/x
  3. Step 3: Cross multiply
    111,741.54x = 154,203.39 × 61,440.54
  4. Step 4: Simplify right side
    111,741.54x = 9,474,339,551.43
  5. Step 5: Solve for x
    x = 9,474,339,551.43/111,741.54
  6. Step 6: Final answer
    x = 84,787.98

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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.