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Finding the Fourth Proportional to 192,739.98, 289,129.32 and 66,363.50

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Solution

The fourth proportional to 192,739.98, 289,129.32 and 66,363.50 is: 99,551.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,739.98 : 289,129.32 = 66,363.50 : x
  2. Step 2: Convert to fraction form
    192,739.98/289,129.32 = 66,363.50/x
  3. Step 3: Cross multiply
    192,739.98x = 289,129.32 × 66,363.50
  4. Step 4: Simplify right side
    192,739.98x = 19,187,633,627.82
  5. Step 5: Solve for x
    x = 19,187,633,627.82/192,739.98
  6. Step 6: Final answer
    x = 99,551.91

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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.