Home / 101,145.04-139,632.65-73,890.54

Finding the Fourth Proportional to 101,145.04, 139,632.65 and 73,890.54

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Solution

The fourth proportional to 101,145.04, 139,632.65 and 73,890.54 is: 102,007.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,145.04 : 139,632.65 = 73,890.54 : x
  2. Step 2: Convert to fraction form
    101,145.04/139,632.65 = 73,890.54/x
  3. Step 3: Cross multiply
    101,145.04x = 139,632.65 × 73,890.54
  4. Step 4: Simplify right side
    101,145.04x = 10,317,531,910.13
  5. Step 5: Solve for x
    x = 10,317,531,910.13/101,145.04
  6. Step 6: Final answer
    x = 102,007.29

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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.