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Finding the Fourth Proportional to 121,996.60, 182,994.90 and 120,830.20

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Solution

The fourth proportional to 121,996.60, 182,994.90 and 120,830.20 is: 181,245.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,996.60 : 182,994.90 = 120,830.20 : x
  2. Step 2: Convert to fraction form
    121,996.60/182,994.90 = 120,830.20/x
  3. Step 3: Cross multiply
    121,996.60x = 182,994.90 × 120,830.20
  4. Step 4: Simplify right side
    121,996.60x = 22,111,310,365.98
  5. Step 5: Solve for x
    x = 22,111,310,365.98/121,996.60
  6. Step 6: Final answer
    x = 181,245.30

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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.