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Finding the Fourth Proportional to 101,815.76, 140,376.97 and 84,585.04

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Solution

The fourth proportional to 101,815.76, 140,376.97 and 84,585.04 is: 116,620.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,815.76 : 140,376.97 = 84,585.04 : x
  2. Step 2: Convert to fraction form
    101,815.76/140,376.97 = 84,585.04/x
  3. Step 3: Cross multiply
    101,815.76x = 140,376.97 × 84,585.04
  4. Step 4: Simplify right side
    101,815.76x = 11,873,791,622.53
  5. Step 5: Solve for x
    x = 11,873,791,622.53/101,815.76
  6. Step 6: Final answer
    x = 116,620.37

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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.