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Finding the Fourth Proportional to 191,930.20, 287,787.30 and 73,605.40

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Solution

The fourth proportional to 191,930.20, 287,787.30 and 73,605.40 is: 110,366.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,930.20 : 287,787.30 = 73,605.40 : x
  2. Step 2: Convert to fraction form
    191,930.20/287,787.30 = 73,605.40/x
  3. Step 3: Cross multiply
    191,930.20x = 287,787.30 × 73,605.40
  4. Step 4: Simplify right side
    191,930.20x = 21,182,699,331.42
  5. Step 5: Solve for x
    x = 21,182,699,331.42/191,930.20
  6. Step 6: Final answer
    x = 110,366.68

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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.