Home / 118,913.44-178,228-90,613.66

Finding the Fourth Proportional to 118,913.44, 178,228 and 90,613.66

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Solution

The fourth proportional to 118,913.44, 178,228 and 90,613.66 is: 135,812.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,913.44 : 178,228 = 90,613.66 : x
  2. Step 2: Convert to fraction form
    118,913.44/178,228 = 90,613.66/x
  3. Step 3: Cross multiply
    118,913.44x = 178,228 × 90,613.66
  4. Step 4: Simplify right side
    118,913.44x = 16,149,891,394.48
  5. Step 5: Solve for x
    x = 16,149,891,394.48/118,913.44
  6. Step 6: Final answer
    x = 135,812.16

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1.5x scale

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.