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Finding the Fourth Proportional to 127,224.60, 190,836.90 and 82,318.20

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Solution

The fourth proportional to 127,224.60, 190,836.90 and 82,318.20 is: 123,477.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,224.60 : 190,836.90 = 82,318.20 : x
  2. Step 2: Convert to fraction form
    127,224.60/190,836.90 = 82,318.20/x
  3. Step 3: Cross multiply
    127,224.60x = 190,836.90 × 82,318.20
  4. Step 4: Simplify right side
    127,224.60x = 15,709,350,101.58
  5. Step 5: Solve for x
    x = 15,709,350,101.58/127,224.60
  6. Step 6: Final answer
    x = 123,477.30

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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.