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Finding the Fourth Proportional to 119,659.54, 165,130.82 and 68,668.21

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Solution

The fourth proportional to 119,659.54, 165,130.82 and 68,668.21 is: 94,762.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,659.54 : 165,130.82 = 68,668.21 : x
  2. Step 2: Convert to fraction form
    119,659.54/165,130.82 = 68,668.21/x
  3. Step 3: Cross multiply
    119,659.54x = 165,130.82 × 68,668.21
  4. Step 4: Simplify right side
    119,659.54x = 11,339,237,825.23
  5. Step 5: Solve for x
    x = 11,339,237,825.23/119,659.54
  6. Step 6: Final answer
    x = 94,762.51

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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.