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Finding the Fourth Proportional to 110,664.21, 152,728.43 and 67,668.90

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Solution

The fourth proportional to 110,664.21, 152,728.43 and 67,668.90 is: 93,390.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,664.21 : 152,728.43 = 67,668.90 : x
  2. Step 2: Convert to fraction form
    110,664.21/152,728.43 = 67,668.90/x
  3. Step 3: Cross multiply
    110,664.21x = 152,728.43 × 67,668.90
  4. Step 4: Simplify right side
    110,664.21x = 10,334,964,856.83
  5. Step 5: Solve for x
    x = 10,334,964,856.83/110,664.21
  6. Step 6: Final answer
    x = 93,390.31

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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.