Home / 129,741.12-179,045.46-73,141.56

Finding the Fourth Proportional to 129,741.12, 179,045.46 and 73,141.56

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Solution

The fourth proportional to 129,741.12, 179,045.46 and 73,141.56 is: 100,936.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,741.12 : 179,045.46 = 73,141.56 : x
  2. Step 2: Convert to fraction form
    129,741.12/179,045.46 = 73,141.56/x
  3. Step 3: Cross multiply
    129,741.12x = 179,045.46 × 73,141.56
  4. Step 4: Simplify right side
    129,741.12x = 13,095,664,255.32
  5. Step 5: Solve for x
    x = 13,095,664,255.32/129,741.12
  6. Step 6: Final answer
    x = 100,936.88

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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.