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Finding the Fourth Proportional to 140,356.72, 208,729.92 and 135,926.92

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Solution

The fourth proportional to 140,356.72, 208,729.92 and 135,926.92 is: 202,142.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,356.72 : 208,729.92 = 135,926.92 : x
  2. Step 2: Convert to fraction form
    140,356.72/208,729.92 = 135,926.92/x
  3. Step 3: Cross multiply
    140,356.72x = 208,729.92 × 135,926.92
  4. Step 4: Simplify right side
    140,356.72x = 28,372,015,137.45
  5. Step 5: Solve for x
    x = 28,372,015,137.45/140,356.72
  6. Step 6: Final answer
    x = 202,142.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.