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Finding the Fourth Proportional to 126,620.64, 174,620.88 and 108,709.92

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Solution

The fourth proportional to 126,620.64, 174,620.88 and 108,709.92 is: 149,920.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,620.64 : 174,620.88 = 108,709.92 : x
  2. Step 2: Convert to fraction form
    126,620.64/174,620.88 = 108,709.92/x
  3. Step 3: Cross multiply
    126,620.64x = 174,620.88 × 108,709.92
  4. Step 4: Simplify right side
    126,620.64x = 18,983,021,895.13
  5. Step 5: Solve for x
    x = 18,983,021,895.13/126,620.64
  6. Step 6: Final answer
    x = 149,920.44

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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.