Home / 115,318.98-172,618.50-84,958.42

Finding the Fourth Proportional to 115,318.98, 172,618.50 and 84,958.42

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Solution

The fourth proportional to 115,318.98, 172,618.50 and 84,958.42 is: 127,172.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,318.98 : 172,618.50 = 84,958.42 : x
  2. Step 2: Convert to fraction form
    115,318.98/172,618.50 = 84,958.42/x
  3. Step 3: Cross multiply
    115,318.98x = 172,618.50 × 84,958.42
  4. Step 4: Simplify right side
    115,318.98x = 14,665,395,022.77
  5. Step 5: Solve for x
    x = 14,665,395,022.77/115,318.98
  6. Step 6: Final answer
    x = 127,172.43

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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.