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Finding the Fourth Proportional to 129,892.60, 194,790.30 and 45,620.20

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Solution

The fourth proportional to 129,892.60, 194,790.30 and 45,620.20 is: 68,413.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,892.60 : 194,790.30 = 45,620.20 : x
  2. Step 2: Convert to fraction form
    129,892.60/194,790.30 = 45,620.20/x
  3. Step 3: Cross multiply
    129,892.60x = 194,790.30 × 45,620.20
  4. Step 4: Simplify right side
    129,892.60x = 8,886,372,444.06
  5. Step 5: Solve for x
    x = 8,886,372,444.06/129,892.60
  6. Step 6: Final answer
    x = 68,413.23

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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.