Home / 189,836.62-261,899.19-109,220.76

Finding the Fourth Proportional to 189,836.62, 261,899.19 and 109,220.76

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Solution

The fourth proportional to 189,836.62, 261,899.19 and 109,220.76 is: 150,681.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,836.62 : 261,899.19 = 109,220.76 : x
  2. Step 2: Convert to fraction form
    189,836.62/261,899.19 = 109,220.76/x
  3. Step 3: Cross multiply
    189,836.62x = 261,899.19 × 109,220.76
  4. Step 4: Simplify right side
    189,836.62x = 28,604,828,575.18
  5. Step 5: Solve for x
    x = 28,604,828,575.18/189,836.62
  6. Step 6: Final answer
    x = 150,681.30

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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.