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Finding the Fourth Proportional to 112,611.30, 168,916.74 and 53,414.64

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Solution

The fourth proportional to 112,611.30, 168,916.74 and 53,414.64 is: 80,121.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,611.30 : 168,916.74 = 53,414.64 : x
  2. Step 2: Convert to fraction form
    112,611.30/168,916.74 = 53,414.64/x
  3. Step 3: Cross multiply
    112,611.30x = 168,916.74 × 53,414.64
  4. Step 4: Simplify right side
    112,611.30x = 9,022,626,857.07
  5. Step 5: Solve for x
    x = 9,022,626,857.07/112,611.30
  6. Step 6: Final answer
    x = 80,121.86

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1.5x scale

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.