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Finding the Fourth Proportional to 133,107.17, 183,687.01 and 72,677.79

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Solution

The fourth proportional to 133,107.17, 183,687.01 and 72,677.79 is: 100,294.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,107.17 : 183,687.01 = 72,677.79 : x
  2. Step 2: Convert to fraction form
    133,107.17/183,687.01 = 72,677.79/x
  3. Step 3: Cross multiply
    133,107.17x = 183,687.01 × 72,677.79
  4. Step 4: Simplify right side
    133,107.17x = 13,349,965,756.81
  5. Step 5: Solve for x
    x = 13,349,965,756.81/133,107.17
  6. Step 6: Final answer
    x = 100,294.87

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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.