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Finding the Fourth Proportional to 110,866.92, 165,881.16 and 68,019.36

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Solution

The fourth proportional to 110,866.92, 165,881.16 and 68,019.36 is: 101,771.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,866.92 : 165,881.16 = 68,019.36 : x
  2. Step 2: Convert to fraction form
    110,866.92/165,881.16 = 68,019.36/x
  3. Step 3: Cross multiply
    110,866.92x = 165,881.16 × 68,019.36
  4. Step 4: Simplify right side
    110,866.92x = 11,283,130,339.26
  5. Step 5: Solve for x
    x = 11,283,130,339.26/110,866.92
  6. Step 6: Final answer
    x = 101,771.84

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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.