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Finding the Fourth Proportional to 159,687.45, 239,531.21 and 64,969.17

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Solution

The fourth proportional to 159,687.45, 239,531.21 and 64,969.17 is: 97,453.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,687.45 : 239,531.21 = 64,969.17 : x
  2. Step 2: Convert to fraction form
    159,687.45/239,531.21 = 64,969.17/x
  3. Step 3: Cross multiply
    159,687.45x = 239,531.21 × 64,969.17
  4. Step 4: Simplify right side
    159,687.45x = 15,562,143,577.95
  5. Step 5: Solve for x
    x = 15,562,143,577.95/159,687.45
  6. Step 6: Final answer
    x = 97,453.77

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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.