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Finding the Fourth Proportional to 154,888.36, 231,745.62 and 91,742.36

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Solution

The fourth proportional to 154,888.36, 231,745.62 and 91,742.36 is: 137,265.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,888.36 : 231,745.62 = 91,742.36 : x
  2. Step 2: Convert to fraction form
    154,888.36/231,745.62 = 91,742.36/x
  3. Step 3: Cross multiply
    154,888.36x = 231,745.62 × 91,742.36
  4. Step 4: Simplify right side
    154,888.36x = 21,260,890,098.46
  5. Step 5: Solve for x
    x = 21,260,890,098.46/154,888.36
  6. Step 6: Final answer
    x = 137,265.90

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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.