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Finding the Fourth Proportional to 135,081.40, 202,403.40 and 127,208.20

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Solution

The fourth proportional to 135,081.40, 202,403.40 and 127,208.20 is: 190,606.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,081.40 : 202,403.40 = 127,208.20 : x
  2. Step 2: Convert to fraction form
    135,081.40/202,403.40 = 127,208.20/x
  3. Step 3: Cross multiply
    135,081.40x = 202,403.40 × 127,208.20
  4. Step 4: Simplify right side
    135,081.40x = 25,747,372,187.88
  5. Step 5: Solve for x
    x = 25,747,372,187.88/135,081.40
  6. Step 6: Final answer
    x = 190,606.35

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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.