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Finding the Fourth Proportional to 132,877.40, 199,623.30 and 91,405.40

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Solution

The fourth proportional to 132,877.40, 199,623.30 and 91,405.40 is: 137,319.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,877.40 : 199,623.30 = 91,405.40 : x
  2. Step 2: Convert to fraction form
    132,877.40/199,623.30 = 91,405.40/x
  3. Step 3: Cross multiply
    132,877.40x = 199,623.30 × 91,405.40
  4. Step 4: Simplify right side
    132,877.40x = 18,246,647,585.82
  5. Step 5: Solve for x
    x = 18,246,647,585.82/132,877.40
  6. Step 6: Final answer
    x = 137,319.42

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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.