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Finding the Fourth Proportional to 119,990.94, 165,597.75 and 66,281.82

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Solution

The fourth proportional to 119,990.94, 165,597.75 and 66,281.82 is: 91,474.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,990.94 : 165,597.75 = 66,281.82 : x
  2. Step 2: Convert to fraction form
    119,990.94/165,597.75 = 66,281.82/x
  3. Step 3: Cross multiply
    119,990.94x = 165,597.75 × 66,281.82
  4. Step 4: Simplify right side
    119,990.94x = 10,976,120,257.91
  5. Step 5: Solve for x
    x = 10,976,120,257.91/119,990.94
  6. Step 6: Final answer
    x = 91,474.58

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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.