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Finding the Fourth Proportional to 133,770.87, 184,619.13 and 76,419.21

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Solution

The fourth proportional to 133,770.87, 184,619.13 and 76,419.21 is: 105,467.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,770.87 : 184,619.13 = 76,419.21 : x
  2. Step 2: Convert to fraction form
    133,770.87/184,619.13 = 76,419.21/x
  3. Step 3: Cross multiply
    133,770.87x = 184,619.13 × 76,419.21
  4. Step 4: Simplify right side
    133,770.87x = 14,108,448,065.49
  5. Step 5: Solve for x
    x = 14,108,448,065.49/133,770.87
  6. Step 6: Final answer
    x = 105,467.27

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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.