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Finding the Fourth Proportional to 119,854.62, 165,396.33 and 66,138.93

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Solution

The fourth proportional to 119,854.62, 165,396.33 and 66,138.93 is: 91,270.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,854.62 : 165,396.33 = 66,138.93 : x
  2. Step 2: Convert to fraction form
    119,854.62/165,396.33 = 66,138.93/x
  3. Step 3: Cross multiply
    119,854.62x = 165,396.33 × 66,138.93
  4. Step 4: Simplify right side
    119,854.62x = 10,939,136,292.13
  5. Step 5: Solve for x
    x = 10,939,136,292.13/119,854.62
  6. Step 6: Final answer
    x = 91,270.04

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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.