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Finding the Fourth Proportional to 188,791.76, 283,074.55 and 128,076.59

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Solution

The fourth proportional to 188,791.76, 283,074.55 and 128,076.59 is: 192,038.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,791.76 : 283,074.55 = 128,076.59 : x
  2. Step 2: Convert to fraction form
    188,791.76/283,074.55 = 128,076.59/x
  3. Step 3: Cross multiply
    188,791.76x = 283,074.55 × 128,076.59
  4. Step 4: Simplify right side
    188,791.76x = 36,255,223,467.28
  5. Step 5: Solve for x
    x = 36,255,223,467.28/188,791.76
  6. Step 6: Final answer
    x = 192,038.16

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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.