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Finding the Fourth Proportional to 131,156.70, 196,443.45 and 101,478.30

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Solution

The fourth proportional to 131,156.70, 196,443.45 and 101,478.30 is: 151,991.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,156.70 : 196,443.45 = 101,478.30 : x
  2. Step 2: Convert to fraction form
    131,156.70/196,443.45 = 101,478.30/x
  3. Step 3: Cross multiply
    131,156.70x = 196,443.45 × 101,478.30
  4. Step 4: Simplify right side
    131,156.70x = 19,934,747,352.14
  5. Step 5: Solve for x
    x = 19,934,747,352.14/131,156.70
  6. Step 6: Final answer
    x = 151,991.83

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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.