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Finding the Fourth Proportional to 137,576.98, 189,771.96 and 91,009.27

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Solution

The fourth proportional to 137,576.98, 189,771.96 and 91,009.27 is: 125,537.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,576.98 : 189,771.96 = 91,009.27 : x
  2. Step 2: Convert to fraction form
    137,576.98/189,771.96 = 91,009.27/x
  3. Step 3: Cross multiply
    137,576.98x = 189,771.96 × 91,009.27
  4. Step 4: Simplify right side
    137,576.98x = 17,271,007,546.07
  5. Step 5: Solve for x
    x = 17,271,007,546.07/137,576.98
  6. Step 6: Final answer
    x = 125,537.05

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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.