Home / 129,869.37-194,824.08-54,990

Finding the Fourth Proportional to 129,869.37, 194,824.08 and 54,990

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Solution

The fourth proportional to 129,869.37, 194,824.08 and 54,990 is: 82,493.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,869.37 : 194,824.08 = 54,990 : x
  2. Step 2: Convert to fraction form
    129,869.37/194,824.08 = 54,990/x
  3. Step 3: Cross multiply
    129,869.37x = 194,824.08 × 54,990
  4. Step 4: Simplify right side
    129,869.37x = 10,713,376,159.20
  5. Step 5: Solve for x
    x = 10,713,376,159.20/129,869.37
  6. Step 6: Final answer
    x = 82,493.48

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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.