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Finding the Fourth Proportional to 133,655, 184,443.90 and 74,039

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Solution

The fourth proportional to 133,655, 184,443.90 and 74,039 is: 102,173.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,655 : 184,443.90 = 74,039 : x
  2. Step 2: Convert to fraction form
    133,655/184,443.90 = 74,039/x
  3. Step 3: Cross multiply
    133,655x = 184,443.90 × 74,039
  4. Step 4: Simplify right side
    133,655x = 13,656,041,912.10
  5. Step 5: Solve for x
    x = 13,656,041,912.10/133,655
  6. Step 6: Final answer
    x = 102,173.82

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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.