Home / 129,591.27-178,835.18-73,020.87

Finding the Fourth Proportional to 129,591.27, 178,835.18 and 73,020.87

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Solution

The fourth proportional to 129,591.27, 178,835.18 and 73,020.87 is: 100,768.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,591.27 : 178,835.18 = 73,020.87 : x
  2. Step 2: Convert to fraction form
    129,591.27/178,835.18 = 73,020.87/x
  3. Step 3: Cross multiply
    129,591.27x = 178,835.18 × 73,020.87
  4. Step 4: Simplify right side
    129,591.27x = 13,058,700,065.10
  5. Step 5: Solve for x
    x = 13,058,700,065.10/129,591.27
  6. Step 6: Final answer
    x = 100,768.36

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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.