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Finding the Fourth Proportional to 191,790.54, 287,783 and 127,792.44

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Solution

The fourth proportional to 191,790.54, 287,783 and 127,792.44 is: 191,753.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,790.54 : 287,783 = 127,792.44 : x
  2. Step 2: Convert to fraction form
    191,790.54/287,783 = 127,792.44/x
  3. Step 3: Cross multiply
    191,790.54x = 287,783 × 127,792.44
  4. Step 4: Simplify right side
    191,790.54x = 36,776,491,760.52
  5. Step 5: Solve for x
    x = 36,776,491,760.52/191,790.54
  6. Step 6: Final answer
    x = 191,753.42

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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.