Home / 129,776.94-179,076.15-76,049.64

Finding the Fourth Proportional to 129,776.94, 179,076.15 and 76,049.64

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Solution

The fourth proportional to 129,776.94, 179,076.15 and 76,049.64 is: 104,939.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,776.94 : 179,076.15 = 76,049.64 : x
  2. Step 2: Convert to fraction form
    129,776.94/179,076.15 = 76,049.64/x
  3. Step 3: Cross multiply
    129,776.94x = 179,076.15 × 76,049.64
  4. Step 4: Simplify right side
    129,776.94x = 13,618,676,740.09
  5. Step 5: Solve for x
    x = 13,618,676,740.09/129,776.94
  6. Step 6: Final answer
    x = 104,939.11

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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.