Home / 189,557.46-261,589.23-109,000.80

Finding the Fourth Proportional to 189,557.46, 261,589.23 and 109,000.80

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Solution

The fourth proportional to 189,557.46, 261,589.23 and 109,000.80 is: 150,421.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,557.46 : 261,589.23 = 109,000.80 : x
  2. Step 2: Convert to fraction form
    189,557.46/261,589.23 = 109,000.80/x
  3. Step 3: Cross multiply
    189,557.46x = 261,589.23 × 109,000.80
  4. Step 4: Simplify right side
    189,557.46x = 28,513,435,341.38
  5. Step 5: Solve for x
    x = 28,513,435,341.38/189,557.46
  6. Step 6: Final answer
    x = 150,421.07

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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.