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Finding the Fourth Proportional to 104,413.20, 156,274.20 and 80,912.40

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Solution

The fourth proportional to 104,413.20, 156,274.20 and 80,912.40 is: 121,100.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,413.20 : 156,274.20 = 80,912.40 : x
  2. Step 2: Convert to fraction form
    104,413.20/156,274.20 = 80,912.40/x
  3. Step 3: Cross multiply
    104,413.20x = 156,274.20 × 80,912.40
  4. Step 4: Simplify right side
    104,413.20x = 12,644,520,580.08
  5. Step 5: Solve for x
    x = 12,644,520,580.08/104,413.20
  6. Step 6: Final answer
    x = 121,100.79

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1.5x scale

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.