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Finding the Fourth Proportional to 121,327,570.60, 181,991,355.90 and 80,512,901.80

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Solution

The fourth proportional to 121,327,570.60, 181,991,355.90 and 80,512,901.80 is: 120,769,352.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,327,570.60 : 181,991,355.90 = 80,512,901.80 : x
  2. Step 2: Convert to fraction form
    121,327,570.60/181,991,355.90 = 80,512,901.80/x
  3. Step 3: Cross multiply
    121,327,570.60x = 181,991,355.90 × 80,512,901.80
  4. Step 4: Simplify right side
    121,327,570.60x = 14,652,652,166,025,550
  5. Step 5: Solve for x
    x = 14,652,652,166,025,550/121,327,570.60
  6. Step 6: Final answer
    x = 120,769,352.70

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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.