Home / 103,006.39-142,163.22-74,418.57

Finding the Fourth Proportional to 103,006.39, 142,163.22 and 74,418.57

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Solution

The fourth proportional to 103,006.39, 142,163.22 and 74,418.57 is: 102,708.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,006.39 : 142,163.22 = 74,418.57 : x
  2. Step 2: Convert to fraction form
    103,006.39/142,163.22 = 74,418.57/x
  3. Step 3: Cross multiply
    103,006.39x = 142,163.22 × 74,418.57
  4. Step 4: Simplify right side
    103,006.39x = 10,579,583,539.00
  5. Step 5: Solve for x
    x = 10,579,583,539.00/103,006.39
  6. Step 6: Final answer
    x = 102,708.03

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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.