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Finding the Fourth Proportional to 132,940.08, 199,410.20 and 39,445

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Solution

The fourth proportional to 132,940.08, 199,410.20 and 39,445 is: 59,167.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,940.08 : 199,410.20 = 39,445 : x
  2. Step 2: Convert to fraction form
    132,940.08/199,410.20 = 39,445/x
  3. Step 3: Cross multiply
    132,940.08x = 199,410.20 × 39,445
  4. Step 4: Simplify right side
    132,940.08x = 7,865,735,339
  5. Step 5: Solve for x
    x = 7,865,735,339/132,940.08
  6. Step 6: Final answer
    x = 59,167.52

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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.