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Finding the Fourth Proportional to 131,143.20, 196,423.20 and 101,464.80

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Solution

The fourth proportional to 131,143.20, 196,423.20 and 101,464.80 is: 151,971.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,143.20 : 196,423.20 = 101,464.80 : x
  2. Step 2: Convert to fraction form
    131,143.20/196,423.20 = 101,464.80/x
  3. Step 3: Cross multiply
    131,143.20x = 196,423.20 × 101,464.80
  4. Step 4: Simplify right side
    131,143.20x = 19,930,040,703.36
  5. Step 5: Solve for x
    x = 19,930,040,703.36/131,143.20
  6. Step 6: Final answer
    x = 151,971.59

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1.5x scale

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.