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Finding the Fourth Proportional to 133,636, 184,418.04 and 74,020

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Solution

The fourth proportional to 133,636, 184,418.04 and 74,020 is: 102,147.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,636 : 184,418.04 = 74,020 : x
  2. Step 2: Convert to fraction form
    133,636/184,418.04 = 74,020/x
  3. Step 3: Cross multiply
    133,636x = 184,418.04 × 74,020
  4. Step 4: Simplify right side
    133,636x = 13,650,623,320.80
  5. Step 5: Solve for x
    x = 13,650,623,320.80/133,636
  6. Step 6: Final answer
    x = 102,147.80

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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.