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Finding the Fourth Proportional to 445,920.17, 668,796.16 and 126,069.49

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Solution

The fourth proportional to 445,920.17, 668,796.16 and 126,069.49 is: 189,080.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,920.17 : 668,796.16 = 126,069.49 : x
  2. Step 2: Convert to fraction form
    445,920.17/668,796.16 = 126,069.49/x
  3. Step 3: Cross multiply
    445,920.17x = 668,796.16 × 126,069.49
  4. Step 4: Simplify right side
    445,920.17x = 84,314,790,805.16
  5. Step 5: Solve for x
    x = 84,314,790,805.16/445,920.17
  6. Step 6: Final answer
    x = 189,080.46

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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.