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Finding the Fourth Proportional to 133,286.56, 183,935.45 and 72,857.45

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Solution

The fourth proportional to 133,286.56, 183,935.45 and 72,857.45 is: 100,543.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,286.56 : 183,935.45 = 72,857.45 : x
  2. Step 2: Convert to fraction form
    133,286.56/183,935.45 = 72,857.45/x
  3. Step 3: Cross multiply
    133,286.56x = 183,935.45 × 72,857.45
  4. Step 4: Simplify right side
    133,286.56x = 13,401,068,493.58
  5. Step 5: Solve for x
    x = 13,401,068,493.58/133,286.56
  6. Step 6: Final answer
    x = 100,543.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.