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Finding the Fourth Proportional to 155,952.89, 215,215.51 and 84,333.43

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Solution

The fourth proportional to 155,952.89, 215,215.51 and 84,333.43 is: 116,380.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,952.89 : 215,215.51 = 84,333.43 : x
  2. Step 2: Convert to fraction form
    155,952.89/215,215.51 = 84,333.43/x
  3. Step 3: Cross multiply
    155,952.89x = 215,215.51 × 84,333.43
  4. Step 4: Simplify right side
    155,952.89x = 18,149,862,147.50
  5. Step 5: Solve for x
    x = 18,149,862,147.50/155,952.89
  6. Step 6: Final answer
    x = 116,380.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.