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Finding the Fourth Proportional to 128,602.28, 192,916.28 and 44,351.35

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Solution

The fourth proportional to 128,602.28, 192,916.28 and 44,351.35 is: 66,531.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,602.28 : 192,916.28 = 44,351.35 : x
  2. Step 2: Convert to fraction form
    128,602.28/192,916.28 = 44,351.35/x
  3. Step 3: Cross multiply
    128,602.28x = 192,916.28 × 44,351.35
  4. Step 4: Simplify right side
    128,602.28x = 8,556,097,083.57
  5. Step 5: Solve for x
    x = 8,556,097,083.57/128,602.28
  6. Step 6: Final answer
    x = 66,531.46

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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.