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Finding the Fourth Proportional to 127,250.92, 190,811.13 and 67,311.76

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Solution

The fourth proportional to 127,250.92, 190,811.13 and 67,311.76 is: 100,933.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,250.92 : 190,811.13 = 67,311.76 : x
  2. Step 2: Convert to fraction form
    127,250.92/190,811.13 = 67,311.76/x
  3. Step 3: Cross multiply
    127,250.92x = 190,811.13 × 67,311.76
  4. Step 4: Simplify right side
    127,250.92x = 12,843,832,987.89
  5. Step 5: Solve for x
    x = 12,843,832,987.89/127,250.92
  6. Step 6: Final answer
    x = 100,933.12

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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.