Home / 85,002.41-127,736.90-80,171.57

Finding the Fourth Proportional to 85,002.41, 127,736.90 and 80,171.57

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Solution

The fourth proportional to 85,002.41, 127,736.90 and 80,171.57 is: 120,477.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,002.41 : 127,736.90 = 80,171.57 : x
  2. Step 2: Convert to fraction form
    85,002.41/127,736.90 = 80,171.57/x
  3. Step 3: Cross multiply
    85,002.41x = 127,736.90 × 80,171.57
  4. Step 4: Simplify right side
    85,002.41x = 10,240,867,819.93
  5. Step 5: Solve for x
    x = 10,240,867,819.93/85,002.41
  6. Step 6: Final answer
    x = 120,477.38

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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.