Home / 140,198.20-193,478.10-76,539.40

Finding the Fourth Proportional to 140,198.20, 193,478.10 and 76,539.40

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Solution

The fourth proportional to 140,198.20, 193,478.10 and 76,539.40 is: 105,626.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,198.20 : 193,478.10 = 76,539.40 : x
  2. Step 2: Convert to fraction form
    140,198.20/193,478.10 = 76,539.40/x
  3. Step 3: Cross multiply
    140,198.20x = 193,478.10 × 76,539.40
  4. Step 4: Simplify right side
    140,198.20x = 14,808,697,687.14
  5. Step 5: Solve for x
    x = 14,808,697,687.14/140,198.20
  6. Step 6: Final answer
    x = 105,626.87

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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.