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Finding the Fourth Proportional to 121,222.92, 181,861.90 and 36,990.60

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Solution

The fourth proportional to 121,222.92, 181,861.90 and 36,990.60 is: 55,494.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,222.92 : 181,861.90 = 36,990.60 : x
  2. Step 2: Convert to fraction form
    121,222.92/181,861.90 = 36,990.60/x
  3. Step 3: Cross multiply
    121,222.92x = 181,861.90 × 36,990.60
  4. Step 4: Simplify right side
    121,222.92x = 6,727,180,798.14
  5. Step 5: Solve for x
    x = 6,727,180,798.14/121,222.92
  6. Step 6: Final answer
    x = 55,494.30

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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.