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Finding the Fourth Proportional to 140,205.39, 193,476.69 and 79,770.39

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Solution

The fourth proportional to 140,205.39, 193,476.69 and 79,770.39 is: 110,079.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,205.39 : 193,476.69 = 79,770.39 : x
  2. Step 2: Convert to fraction form
    140,205.39/193,476.69 = 79,770.39/x
  3. Step 3: Cross multiply
    140,205.39x = 193,476.69 × 79,770.39
  4. Step 4: Simplify right side
    140,205.39x = 15,433,711,017.21
  5. Step 5: Solve for x
    x = 15,433,711,017.21/140,205.39
  6. Step 6: Final answer
    x = 110,079.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.