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Finding the Fourth Proportional to 136,555.75, 188,458.16 and 75,313.92

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Solution

The fourth proportional to 136,555.75, 188,458.16 and 75,313.92 is: 103,939.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,555.75 : 188,458.16 = 75,313.92 : x
  2. Step 2: Convert to fraction form
    136,555.75/188,458.16 = 75,313.92/x
  3. Step 3: Cross multiply
    136,555.75x = 188,458.16 × 75,313.92
  4. Step 4: Simplify right side
    136,555.75x = 14,193,522,785.59
  5. Step 5: Solve for x
    x = 14,193,522,785.59/136,555.75
  6. Step 6: Final answer
    x = 103,939.40

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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.