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Finding the Fourth Proportional to 140,117.80, 193,366.80 and 79,697.12

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Solution

The fourth proportional to 140,117.80, 193,366.80 and 79,697.12 is: 109,984.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,117.80 : 193,366.80 = 79,697.12 : x
  2. Step 2: Convert to fraction form
    140,117.80/193,366.80 = 79,697.12/x
  3. Step 3: Cross multiply
    140,117.80x = 193,366.80 × 79,697.12
  4. Step 4: Simplify right side
    140,117.80x = 15,410,777,063.62
  5. Step 5: Solve for x
    x = 15,410,777,063.62/140,117.80
  6. Step 6: Final answer
    x = 109,984.44

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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.