Home / 131,052.90-196,725.15-81,189.30

Finding the Fourth Proportional to 131,052.90, 196,725.15 and 81,189.30

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Solution

The fourth proportional to 131,052.90, 196,725.15 and 81,189.30 is: 121,874.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,052.90 : 196,725.15 = 81,189.30 : x
  2. Step 2: Convert to fraction form
    131,052.90/196,725.15 = 81,189.30/x
  3. Step 3: Cross multiply
    131,052.90x = 196,725.15 × 81,189.30
  4. Step 4: Simplify right side
    131,052.90x = 15,971,977,220.90
  5. Step 5: Solve for x
    x = 15,971,977,220.90/131,052.90
  6. Step 6: Final answer
    x = 121,874.28

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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.