Home / 128,214.30-192,321.45-126,464.70

Finding the Fourth Proportional to 128,214.30, 192,321.45 and 126,464.70

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Solution

The fourth proportional to 128,214.30, 192,321.45 and 126,464.70 is: 189,697.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,214.30 : 192,321.45 = 126,464.70 : x
  2. Step 2: Convert to fraction form
    128,214.30/192,321.45 = 126,464.70/x
  3. Step 3: Cross multiply
    128,214.30x = 192,321.45 × 126,464.70
  4. Step 4: Simplify right side
    128,214.30x = 24,321,874,477.82
  5. Step 5: Solve for x
    x = 24,321,874,477.82/128,214.30
  6. Step 6: Final answer
    x = 189,697.05

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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.