Home / 131,063.90-196,741.65-81,200.30

Finding the Fourth Proportional to 131,063.90, 196,741.65 and 81,200.30

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Solution

The fourth proportional to 131,063.90, 196,741.65 and 81,200.30 is: 121,890.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,063.90 : 196,741.65 = 81,200.30 : x
  2. Step 2: Convert to fraction form
    131,063.90/196,741.65 = 81,200.30/x
  3. Step 3: Cross multiply
    131,063.90x = 196,741.65 × 81,200.30
  4. Step 4: Simplify right side
    131,063.90x = 15,975,481,002.50
  5. Step 5: Solve for x
    x = 15,975,481,002.50/131,063.90
  6. Step 6: Final answer
    x = 121,890.78

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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.