Home / 189,520.50-261,420.39-112,986.42

Finding the Fourth Proportional to 189,520.50, 261,420.39 and 112,986.42

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Solution

The fourth proportional to 189,520.50, 261,420.39 and 112,986.42 is: 155,850.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,520.50 : 261,420.39 = 112,986.42 : x
  2. Step 2: Convert to fraction form
    189,520.50/261,420.39 = 112,986.42/x
  3. Step 3: Cross multiply
    189,520.50x = 261,420.39 × 112,986.42
  4. Step 4: Simplify right side
    189,520.50x = 29,536,953,981.10
  5. Step 5: Solve for x
    x = 29,536,953,981.10/189,520.50
  6. Step 6: Final answer
    x = 155,850.97

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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.