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Finding the Fourth Proportional to 140,654.80, 211,079.40 and 101,245.60

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Solution

The fourth proportional to 140,654.80, 211,079.40 and 101,245.60 is: 151,938.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,654.80 : 211,079.40 = 101,245.60 : x
  2. Step 2: Convert to fraction form
    140,654.80/211,079.40 = 101,245.60/x
  3. Step 3: Cross multiply
    140,654.80x = 211,079.40 × 101,245.60
  4. Step 4: Simplify right side
    140,654.80x = 21,370,860,500.64
  5. Step 5: Solve for x
    x = 21,370,860,500.64/140,654.80
  6. Step 6: Final answer
    x = 151,938.37

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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.