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Finding the Fourth Proportional to 188,613.60, 260,286.72 and 103,736.16

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Solution

The fourth proportional to 188,613.60, 260,286.72 and 103,736.16 is: 143,155.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,613.60 : 260,286.72 = 103,736.16 : x
  2. Step 2: Convert to fraction form
    188,613.60/260,286.72 = 103,736.16/x
  3. Step 3: Cross multiply
    188,613.60x = 260,286.72 × 103,736.16
  4. Step 4: Simplify right side
    188,613.60x = 27,001,144,831.80
  5. Step 5: Solve for x
    x = 27,001,144,831.80/188,613.60
  6. Step 6: Final answer
    x = 143,155.87

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1.5x scale

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.