Home / 129,558.75-178,835.82-75,861.03

Finding the Fourth Proportional to 129,558.75, 178,835.82 and 75,861.03

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Solution

The fourth proportional to 129,558.75, 178,835.82 and 75,861.03 is: 104,714.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,558.75 : 178,835.82 = 75,861.03 : x
  2. Step 2: Convert to fraction form
    129,558.75/178,835.82 = 75,861.03/x
  3. Step 3: Cross multiply
    129,558.75x = 178,835.82 × 75,861.03
  4. Step 4: Simplify right side
    129,558.75x = 13,566,669,506.09
  5. Step 5: Solve for x
    x = 13,566,669,506.09/129,558.75
  6. Step 6: Final answer
    x = 104,714.42

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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.