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Finding the Fourth Proportional to 134,087.40, 200,912.40 and 115,279.20

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Solution

The fourth proportional to 134,087.40, 200,912.40 and 115,279.20 is: 172,730.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,087.40 : 200,912.40 = 115,279.20 : x
  2. Step 2: Convert to fraction form
    134,087.40/200,912.40 = 115,279.20/x
  3. Step 3: Cross multiply
    134,087.40x = 200,912.40 × 115,279.20
  4. Step 4: Simplify right side
    134,087.40x = 23,161,020,742.08
  5. Step 5: Solve for x
    x = 23,161,020,742.08/134,087.40
  6. Step 6: Final answer
    x = 172,730.78

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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.