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Finding the Fourth Proportional to 191,362.80, 287,108.73 and 84,732.20

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Solution

The fourth proportional to 191,362.80, 287,108.73 and 84,732.20 is: 127,126.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,362.80 : 287,108.73 = 84,732.20 : x
  2. Step 2: Convert to fraction form
    191,362.80/287,108.73 = 84,732.20/x
  3. Step 3: Cross multiply
    191,362.80x = 287,108.73 × 84,732.20
  4. Step 4: Simplify right side
    191,362.80x = 24,327,352,472.90
  5. Step 5: Solve for x
    x = 24,327,352,472.90/191,362.80
  6. Step 6: Final answer
    x = 127,126.86

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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.