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Finding the Fourth Proportional to 117,972.75, 162,802.40 and 67,687.95

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Solution

The fourth proportional to 117,972.75, 162,802.40 and 67,687.95 is: 93,409.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,972.75 : 162,802.40 = 67,687.95 : x
  2. Step 2: Convert to fraction form
    117,972.75/162,802.40 = 67,687.95/x
  3. Step 3: Cross multiply
    117,972.75x = 162,802.40 × 67,687.95
  4. Step 4: Simplify right side
    117,972.75x = 11,019,760,372.64
  5. Step 5: Solve for x
    x = 11,019,760,372.64/117,972.75
  6. Step 6: Final answer
    x = 93,409.37

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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.