Home / 131,213.12-196,906.55-72,090

Finding the Fourth Proportional to 131,213.12, 196,906.55 and 72,090

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Solution

The fourth proportional to 131,213.12, 196,906.55 and 72,090 is: 108,182.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,213.12 : 196,906.55 = 72,090 : x
  2. Step 2: Convert to fraction form
    131,213.12/196,906.55 = 72,090/x
  3. Step 3: Cross multiply
    131,213.12x = 196,906.55 × 72,090
  4. Step 4: Simplify right side
    131,213.12x = 14,194,992,829.05
  5. Step 5: Solve for x
    x = 14,194,992,829.05/131,213.12
  6. Step 6: Final answer
    x = 108,182.73

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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.