Home / 118,722.11-178,082.81-91,743.71

Finding the Fourth Proportional to 118,722.11, 178,082.81 and 91,743.71

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Solution

The fourth proportional to 118,722.11, 178,082.81 and 91,743.71 is: 137,615.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,722.11 : 178,082.81 = 91,743.71 : x
  2. Step 2: Convert to fraction form
    118,722.11/178,082.81 = 91,743.71/x
  3. Step 3: Cross multiply
    118,722.11x = 178,082.81 × 91,743.71
  4. Step 4: Simplify right side
    118,722.11x = 16,337,977,217.91
  5. Step 5: Solve for x
    x = 16,337,977,217.91/118,722.11
  6. Step 6: Final answer
    x = 137,615.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.