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Finding the Fourth Proportional to 133,428, 184,136.40 and 73,812

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Solution

The fourth proportional to 133,428, 184,136.40 and 73,812 is: 101,863.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,428 : 184,136.40 = 73,812 : x
  2. Step 2: Convert to fraction form
    133,428/184,136.40 = 73,812/x
  3. Step 3: Cross multiply
    133,428x = 184,136.40 × 73,812
  4. Step 4: Simplify right side
    133,428x = 13,591,475,956.80
  5. Step 5: Solve for x
    x = 13,591,475,956.80/133,428
  6. Step 6: Final answer
    x = 101,863.75

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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.