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Finding the Fourth Proportional to 133,079.40, 199,043.10 and 119,140.20

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Solution

The fourth proportional to 133,079.40, 199,043.10 and 119,140.20 is: 178,194.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,079.40 : 199,043.10 = 119,140.20 : x
  2. Step 2: Convert to fraction form
    133,079.40/199,043.10 = 119,140.20/x
  3. Step 3: Cross multiply
    133,079.40x = 199,043.10 × 119,140.20
  4. Step 4: Simplify right side
    133,079.40x = 23,714,034,742.62
  5. Step 5: Solve for x
    x = 23,714,034,742.62/133,079.40
  6. Step 6: Final answer
    x = 178,194.63

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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.