Home / 129,966.20-194,949.30-121,412.60

Finding the Fourth Proportional to 129,966.20, 194,949.30 and 121,412.60

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Solution

The fourth proportional to 129,966.20, 194,949.30 and 121,412.60 is: 182,118.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,966.20 : 194,949.30 = 121,412.60 : x
  2. Step 2: Convert to fraction form
    129,966.20/194,949.30 = 121,412.60/x
  3. Step 3: Cross multiply
    129,966.20x = 194,949.30 × 121,412.60
  4. Step 4: Simplify right side
    129,966.20x = 23,669,301,381.18
  5. Step 5: Solve for x
    x = 23,669,301,381.18/129,966.20
  6. Step 6: Final answer
    x = 182,118.90

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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.