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Finding the Fourth Proportional to 161,711.30, 242,238.90 and 91,508.60

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Solution

The fourth proportional to 161,711.30, 242,238.90 and 91,508.60 is: 137,077.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,711.30 : 242,238.90 = 91,508.60 : x
  2. Step 2: Convert to fraction form
    161,711.30/242,238.90 = 91,508.60/x
  3. Step 3: Cross multiply
    161,711.30x = 242,238.90 × 91,508.60
  4. Step 4: Simplify right side
    161,711.30x = 22,166,942,604.54
  5. Step 5: Solve for x
    x = 22,166,942,604.54/161,711.30
  6. Step 6: Final answer
    x = 137,077.26

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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.