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Finding the Fourth Proportional to 119,833.80, 165,369.72 and 66,121.08

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Solution

The fourth proportional to 119,833.80, 165,369.72 and 66,121.08 is: 91,246.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,833.80 : 165,369.72 = 66,121.08 : x
  2. Step 2: Convert to fraction form
    119,833.80/165,369.72 = 66,121.08/x
  3. Step 3: Cross multiply
    119,833.80x = 165,369.72 × 66,121.08
  4. Step 4: Simplify right side
    119,833.80x = 10,934,424,485.70
  5. Step 5: Solve for x
    x = 10,934,424,485.70/119,833.80
  6. Step 6: Final answer
    x = 91,246.58

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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.