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Finding the Fourth Proportional to 110,355.75, 165,316.41 and 72,801

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Solution

The fourth proportional to 110,355.75, 165,316.41 and 72,801 is: 109,058.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,355.75 : 165,316.41 = 72,801 : x
  2. Step 2: Convert to fraction form
    110,355.75/165,316.41 = 72,801/x
  3. Step 3: Cross multiply
    110,355.75x = 165,316.41 × 72,801
  4. Step 4: Simplify right side
    110,355.75x = 12,035,199,964.41
  5. Step 5: Solve for x
    x = 12,035,199,964.41/110,355.75
  6. Step 6: Final answer
    x = 109,058.20

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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.