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Finding the Fourth Proportional to 120,293.67, 165,999.33 and 68,612.80

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Solution

The fourth proportional to 120,293.67, 165,999.33 and 68,612.80 is: 94,682.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,293.67 : 165,999.33 = 68,612.80 : x
  2. Step 2: Convert to fraction form
    120,293.67/165,999.33 = 68,612.80/x
  3. Step 3: Cross multiply
    120,293.67x = 165,999.33 × 68,612.80
  4. Step 4: Simplify right side
    120,293.67x = 11,389,678,829.42
  5. Step 5: Solve for x
    x = 11,389,678,829.42/120,293.67
  6. Step 6: Final answer
    x = 94,682.28

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1.5x scale

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.