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Finding the Fourth Proportional to 126,159.80, 188,850.90 and 73,412.60

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Solution

The fourth proportional to 126,159.80, 188,850.90 and 73,412.60 is: 109,892.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,159.80 : 188,850.90 = 73,412.60 : x
  2. Step 2: Convert to fraction form
    126,159.80/188,850.90 = 73,412.60/x
  3. Step 3: Cross multiply
    126,159.80x = 188,850.90 × 73,412.60
  4. Step 4: Simplify right side
    126,159.80x = 13,864,035,581.34
  5. Step 5: Solve for x
    x = 13,864,035,581.34/126,159.80
  6. Step 6: Final answer
    x = 109,892.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.