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Finding the Fourth Proportional to 136,314.50, 188,099.21 and 75,880.40

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Solution

The fourth proportional to 136,314.50, 188,099.21 and 75,880.40 is: 104,706.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,314.50 : 188,099.21 = 75,880.40 : x
  2. Step 2: Convert to fraction form
    136,314.50/188,099.21 = 75,880.40/x
  3. Step 3: Cross multiply
    136,314.50x = 188,099.21 × 75,880.40
  4. Step 4: Simplify right side
    136,314.50x = 14,273,042,543.69
  5. Step 5: Solve for x
    x = 14,273,042,543.69/136,314.50
  6. Step 6: Final answer
    x = 104,706.71

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1.5x scale

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.