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Finding the Fourth Proportional to 128,033.04, 191,916.56 and 53,193.90

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Solution

The fourth proportional to 128,033.04, 191,916.56 and 53,193.90 is: 79,735.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,033.04 : 191,916.56 = 53,193.90 : x
  2. Step 2: Convert to fraction form
    128,033.04/191,916.56 = 53,193.90/x
  3. Step 3: Cross multiply
    128,033.04x = 191,916.56 × 53,193.90
  4. Step 4: Simplify right side
    128,033.04x = 10,208,790,300.98
  5. Step 5: Solve for x
    x = 10,208,790,300.98/128,033.04
  6. Step 6: Final answer
    x = 79,735.59

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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.