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Finding the Fourth Proportional to 104,361.68, 143,963.96 and 74,159.21

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Solution

The fourth proportional to 104,361.68, 143,963.96 and 74,159.21 is: 102,300.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,361.68 : 143,963.96 = 74,159.21 : x
  2. Step 2: Convert to fraction form
    104,361.68/143,963.96 = 74,159.21/x
  3. Step 3: Cross multiply
    104,361.68x = 143,963.96 × 74,159.21
  4. Step 4: Simplify right side
    104,361.68x = 10,676,252,451.46
  5. Step 5: Solve for x
    x = 10,676,252,451.46/104,361.68
  6. Step 6: Final answer
    x = 102,300.51

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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.