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Finding the Fourth Proportional to 136,379.50, 204,568.84 and 61,411.87

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Solution

The fourth proportional to 136,379.50, 204,568.84 and 61,411.87 is: 92,117.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,379.50 : 204,568.84 = 61,411.87 : x
  2. Step 2: Convert to fraction form
    136,379.50/204,568.84 = 61,411.87/x
  3. Step 3: Cross multiply
    136,379.50x = 204,568.84 × 61,411.87
  4. Step 4: Simplify right side
    136,379.50x = 12,562,955,340.61
  5. Step 5: Solve for x
    x = 12,562,955,340.61/136,379.50
  6. Step 6: Final answer
    x = 92,117.62

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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.