Home / 101,106.06-139,571.10-65,313.52

Finding the Fourth Proportional to 101,106.06, 139,571.10 and 65,313.52

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Solution

The fourth proportional to 101,106.06, 139,571.10 and 65,313.52 is: 90,161.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,106.06 : 139,571.10 = 65,313.52 : x
  2. Step 2: Convert to fraction form
    101,106.06/139,571.10 = 65,313.52/x
  3. Step 3: Cross multiply
    101,106.06x = 139,571.10 × 65,313.52
  4. Step 4: Simplify right side
    101,106.06x = 9,115,879,831.27
  5. Step 5: Solve for x
    x = 9,115,879,831.27/101,106.06
  6. Step 6: Final answer
    x = 90,161.56

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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.