Home / 189,517.50-261,416.25-112,983.42

Finding the Fourth Proportional to 189,517.50, 261,416.25 and 112,983.42

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Solution

The fourth proportional to 189,517.50, 261,416.25 and 112,983.42 is: 155,846.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,517.50 : 261,416.25 = 112,983.42 : x
  2. Step 2: Convert to fraction form
    189,517.50/261,416.25 = 112,983.42/x
  3. Step 3: Cross multiply
    189,517.50x = 261,416.25 × 112,983.42
  4. Step 4: Simplify right side
    189,517.50x = 29,535,701,968.58
  5. Step 5: Solve for x
    x = 29,535,701,968.58/189,517.50
  6. Step 6: Final answer
    x = 155,846.83

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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.