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Finding the Fourth Proportional to 103,082.58, 154,491.73 and 89,699.96

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Solution

The fourth proportional to 103,082.58, 154,491.73 and 89,699.96 is: 134,434.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,082.58 : 154,491.73 = 89,699.96 : x
  2. Step 2: Convert to fraction form
    103,082.58/154,491.73 = 89,699.96/x
  3. Step 3: Cross multiply
    103,082.58x = 154,491.73 × 89,699.96
  4. Step 4: Simplify right side
    103,082.58x = 13,857,901,390.85
  5. Step 5: Solve for x
    x = 13,857,901,390.85/103,082.58
  6. Step 6: Final answer
    x = 134,434.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.