Home / 129,936.83-179,315.78-76,260.56

Finding the Fourth Proportional to 129,936.83, 179,315.78 and 76,260.56

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Solution

The fourth proportional to 129,936.83, 179,315.78 and 76,260.56 is: 105,241.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,936.83 : 179,315.78 = 76,260.56 : x
  2. Step 2: Convert to fraction form
    129,936.83/179,315.78 = 76,260.56/x
  3. Step 3: Cross multiply
    129,936.83x = 179,315.78 × 76,260.56
  4. Step 4: Simplify right side
    129,936.83x = 13,674,720,521.76
  5. Step 5: Solve for x
    x = 13,674,720,521.76/129,936.83
  6. Step 6: Final answer
    x = 105,241.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.