Home / 103,620.10-142,990.22-61,163.14

Finding the Fourth Proportional to 103,620.10, 142,990.22 and 61,163.14

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Solution

The fourth proportional to 103,620.10, 142,990.22 and 61,163.14 is: 84,401.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,620.10 : 142,990.22 = 61,163.14 : x
  2. Step 2: Convert to fraction form
    103,620.10/142,990.22 = 61,163.14/x
  3. Step 3: Cross multiply
    103,620.10x = 142,990.22 × 61,163.14
  4. Step 4: Simplify right side
    103,620.10x = 8,745,730,844.49
  5. Step 5: Solve for x
    x = 8,745,730,844.49/103,620.10
  6. Step 6: Final answer
    x = 84,401.88

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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.