Home / 189,200.12-261,098.19-103,158.41

Finding the Fourth Proportional to 189,200.12, 261,098.19 and 103,158.41

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Solution

The fourth proportional to 189,200.12, 261,098.19 and 103,158.41 is: 142,359.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,200.12 : 261,098.19 = 103,158.41 : x
  2. Step 2: Convert to fraction form
    189,200.12/261,098.19 = 103,158.41/x
  3. Step 3: Cross multiply
    189,200.12x = 261,098.19 × 103,158.41
  4. Step 4: Simplify right side
    189,200.12x = 26,934,472,828.79
  5. Step 5: Solve for x
    x = 26,934,472,828.79/189,200.12
  6. Step 6: Final answer
    x = 142,359.71

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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.