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Finding the Fourth Proportional to 120,830.60, 181,245.90 and 120,830.60

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Solution

The fourth proportional to 120,830.60, 181,245.90 and 120,830.60 is: 181,245.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,830.60 : 181,245.90 = 120,830.60 : x
  2. Step 2: Convert to fraction form
    120,830.60/181,245.90 = 120,830.60/x
  3. Step 3: Cross multiply
    120,830.60x = 181,245.90 × 120,830.60
  4. Step 4: Simplify right side
    120,830.60x = 21,900,050,844.54
  5. Step 5: Solve for x
    x = 21,900,050,844.54/120,830.60
  6. Step 6: Final answer
    x = 181,245.90

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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.