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Finding the Fourth Proportional to 191,874.80, 287,423.40 and 108,671.60

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Solution

The fourth proportional to 191,874.80, 287,423.40 and 108,671.60 is: 162,787.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,874.80 : 287,423.40 = 108,671.60 : x
  2. Step 2: Convert to fraction form
    191,874.80/287,423.40 = 108,671.60/x
  3. Step 3: Cross multiply
    191,874.80x = 287,423.40 × 108,671.60
  4. Step 4: Simplify right side
    191,874.80x = 31,234,760,755.44
  5. Step 5: Solve for x
    x = 31,234,760,755.44/191,874.80
  6. Step 6: Final answer
    x = 162,787.20

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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.