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Finding the Fourth Proportional to 191,879.22, 287,882.58 and 85,248.36

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Solution

The fourth proportional to 191,879.22, 287,882.58 and 85,248.36 is: 127,900.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,879.22 : 287,882.58 = 85,248.36 : x
  2. Step 2: Convert to fraction form
    191,879.22/287,882.58 = 85,248.36/x
  3. Step 3: Cross multiply
    191,879.22x = 287,882.58 × 85,248.36
  4. Step 4: Simplify right side
    191,879.22x = 24,541,517,817.57
  5. Step 5: Solve for x
    x = 24,541,517,817.57/191,879.22
  6. Step 6: Final answer
    x = 127,900.86

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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.