Home / 128,216.69-192,305.60-45,091.25

Finding the Fourth Proportional to 128,216.69, 192,305.60 and 45,091.25

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Solution

The fourth proportional to 128,216.69, 192,305.60 and 45,091.25 is: 67,630.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,216.69 : 192,305.60 = 45,091.25 : x
  2. Step 2: Convert to fraction form
    128,216.69/192,305.60 = 45,091.25/x
  3. Step 3: Cross multiply
    128,216.69x = 192,305.60 × 45,091.25
  4. Step 4: Simplify right side
    128,216.69x = 8,671,299,660.54
  5. Step 5: Solve for x
    x = 8,671,299,660.54/128,216.69
  6. Step 6: Final answer
    x = 67,630.04

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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.