Home / 101,004.57-139,380.03-55,680.21

Finding the Fourth Proportional to 101,004.57, 139,380.03 and 55,680.21

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Solution

The fourth proportional to 101,004.57, 139,380.03 and 55,680.21 is: 76,835.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,004.57 : 139,380.03 = 55,680.21 : x
  2. Step 2: Convert to fraction form
    101,004.57/139,380.03 = 55,680.21/x
  3. Step 3: Cross multiply
    101,004.57x = 139,380.03 × 55,680.21
  4. Step 4: Simplify right side
    101,004.57x = 7,760,709,340.21
  5. Step 5: Solve for x
    x = 7,760,709,340.21/101,004.57
  6. Step 6: Final answer
    x = 76,835.23

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1.5x scale

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.