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Finding the Fourth Proportional to 189,459.62, 261,454.30 and 104,576.72

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Solution

The fourth proportional to 189,459.62, 261,454.30 and 104,576.72 is: 144,315.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,459.62 : 261,454.30 = 104,576.72 : x
  2. Step 2: Convert to fraction form
    189,459.62/261,454.30 = 104,576.72/x
  3. Step 3: Cross multiply
    189,459.62x = 261,454.30 × 104,576.72
  4. Step 4: Simplify right side
    189,459.62x = 27,342,033,123.90
  5. Step 5: Solve for x
    x = 27,342,033,123.90/189,459.62
  6. Step 6: Final answer
    x = 144,315.89

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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.