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Finding the Fourth Proportional to 192,598.31, 289,028.70 and 67,939.31

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Solution

The fourth proportional to 192,598.31, 289,028.70 and 67,939.31 is: 101,955.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,598.31 : 289,028.70 = 67,939.31 : x
  2. Step 2: Convert to fraction form
    192,598.31/289,028.70 = 67,939.31/x
  3. Step 3: Cross multiply
    192,598.31x = 289,028.70 × 67,939.31
  4. Step 4: Simplify right side
    192,598.31x = 19,636,411,170.77
  5. Step 5: Solve for x
    x = 19,636,411,170.77/192,598.31
  6. Step 6: Final answer
    x = 101,955.26

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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.