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Finding the Fourth Proportional to 99,497.70, 149,246.55 and 68,004.90

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Solution

The fourth proportional to 99,497.70, 149,246.55 and 68,004.90 is: 102,007.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,497.70 : 149,246.55 = 68,004.90 : x
  2. Step 2: Convert to fraction form
    99,497.70/149,246.55 = 68,004.90/x
  3. Step 3: Cross multiply
    99,497.70x = 149,246.55 × 68,004.90
  4. Step 4: Simplify right side
    99,497.70x = 10,149,496,708.10
  5. Step 5: Solve for x
    x = 10,149,496,708.10/99,497.70
  6. Step 6: Final answer
    x = 102,007.35

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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.