Home / 129,723.44-178,997.76-73,123.88

Finding the Fourth Proportional to 129,723.44, 178,997.76 and 73,123.88

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Solution

The fourth proportional to 129,723.44, 178,997.76 and 73,123.88 is: 100,899.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,723.44 : 178,997.76 = 73,123.88 : x
  2. Step 2: Convert to fraction form
    129,723.44/178,997.76 = 73,123.88/x
  3. Step 3: Cross multiply
    129,723.44x = 178,997.76 × 73,123.88
  4. Step 4: Simplify right side
    129,723.44x = 13,089,009,827.52
  5. Step 5: Solve for x
    x = 13,089,009,827.52/129,723.44
  6. Step 6: Final answer
    x = 100,899.35

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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.