Home / 129,934.53-179,318.21-82,170.45

Finding the Fourth Proportional to 129,934.53, 179,318.21 and 82,170.45

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Solution

The fourth proportional to 129,934.53, 179,318.21 and 82,170.45 is: 113,400.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,934.53 : 179,318.21 = 82,170.45 : x
  2. Step 2: Convert to fraction form
    129,934.53/179,318.21 = 82,170.45/x
  3. Step 3: Cross multiply
    129,934.53x = 179,318.21 × 82,170.45
  4. Step 4: Simplify right side
    129,934.53x = 14,734,657,598.04
  5. Step 5: Solve for x
    x = 14,734,657,598.04/129,934.53
  6. Step 6: Final answer
    x = 113,400.63

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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.