Home / 103,614.49-142,993.25-61,172.11

Finding the Fourth Proportional to 103,614.49, 142,993.25 and 61,172.11

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Solution

The fourth proportional to 103,614.49, 142,993.25 and 61,172.11 is: 84,420.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,614.49 : 142,993.25 = 61,172.11 : x
  2. Step 2: Convert to fraction form
    103,614.49/142,993.25 = 61,172.11/x
  3. Step 3: Cross multiply
    103,614.49x = 142,993.25 × 61,172.11
  4. Step 4: Simplify right side
    103,614.49x = 8,747,198,818.26
  5. Step 5: Solve for x
    x = 8,747,198,818.26/103,614.49
  6. Step 6: Final answer
    x = 84,420.61

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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.