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Finding the Fourth Proportional to 120,151.84, 165,806.58 and 66,435.46

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Solution

The fourth proportional to 120,151.84, 165,806.58 and 66,435.46 is: 91,679.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,151.84 : 165,806.58 = 66,435.46 : x
  2. Step 2: Convert to fraction form
    120,151.84/165,806.58 = 66,435.46/x
  3. Step 3: Cross multiply
    120,151.84x = 165,806.58 × 66,435.46
  4. Step 4: Simplify right side
    120,151.84x = 11,015,436,413.33
  5. Step 5: Solve for x
    x = 11,015,436,413.33/120,151.84
  6. Step 6: Final answer
    x = 91,679.30

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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.