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Finding the Fourth Proportional to 132,912.40, 199,388.40 and 47,516.80

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Solution

The fourth proportional to 132,912.40, 199,388.40 and 47,516.80 is: 71,282.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,912.40 : 199,388.40 = 47,516.80 : x
  2. Step 2: Convert to fraction form
    132,912.40/199,388.40 = 47,516.80/x
  3. Step 3: Cross multiply
    132,912.40x = 199,388.40 × 47,516.80
  4. Step 4: Simplify right side
    132,912.40x = 9,474,298,725.12
  5. Step 5: Solve for x
    x = 9,474,298,725.12/132,912.40
  6. Step 6: Final answer
    x = 71,282.28

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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.