Home / 136,919.60-189,078.32-129,464.60

Finding the Fourth Proportional to 136,919.60, 189,078.32 and 129,464.60

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Solution

The fourth proportional to 136,919.60, 189,078.32 and 129,464.60 is: 178,783.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,919.60 : 189,078.32 = 129,464.60 : x
  2. Step 2: Convert to fraction form
    136,919.60/189,078.32 = 129,464.60/x
  3. Step 3: Cross multiply
    136,919.60x = 189,078.32 × 129,464.60
  4. Step 4: Simplify right side
    136,919.60x = 24,478,949,067.47
  5. Step 5: Solve for x
    x = 24,478,949,067.47/136,919.60
  6. Step 6: Final answer
    x = 178,783.38

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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.