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Finding the Fourth Proportional to 104,262.87, 143,869.89 and 74,037.18

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Solution

The fourth proportional to 104,262.87, 143,869.89 and 74,037.18 is: 102,162.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,262.87 : 143,869.89 = 74,037.18 : x
  2. Step 2: Convert to fraction form
    104,262.87/143,869.89 = 74,037.18/x
  3. Step 3: Cross multiply
    104,262.87x = 143,869.89 × 74,037.18
  4. Step 4: Simplify right side
    104,262.87x = 10,651,720,942.51
  5. Step 5: Solve for x
    x = 10,651,720,942.51/104,262.87
  6. Step 6: Final answer
    x = 102,162.17

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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.