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Finding the Fourth Proportional to 131,461.20, 196,900.20 and 108,133.20

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Solution

The fourth proportional to 131,461.20, 196,900.20 and 108,133.20 is: 161,959.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,461.20 : 196,900.20 = 108,133.20 : x
  2. Step 2: Convert to fraction form
    131,461.20/196,900.20 = 108,133.20/x
  3. Step 3: Cross multiply
    131,461.20x = 196,900.20 × 108,133.20
  4. Step 4: Simplify right side
    131,461.20x = 21,291,448,706.64
  5. Step 5: Solve for x
    x = 21,291,448,706.64/131,461.20
  6. Step 6: Final answer
    x = 161,959.94

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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.