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Finding the Fourth Proportional to 115,317.98, 172,617.01 and 84,957.42

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Solution

The fourth proportional to 115,317.98, 172,617.01 and 84,957.42 is: 127,170.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,317.98 : 172,617.01 = 84,957.42 : x
  2. Step 2: Convert to fraction form
    115,317.98/172,617.01 = 84,957.42/x
  3. Step 3: Cross multiply
    115,317.98x = 172,617.01 × 84,957.42
  4. Step 4: Simplify right side
    115,317.98x = 14,665,096,252.63
  5. Step 5: Solve for x
    x = 14,665,096,252.63/115,317.98
  6. Step 6: Final answer
    x = 127,170.94

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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.