Home / 101,142.20-139,574.94-58,121.18

Finding the Fourth Proportional to 101,142.20, 139,574.94 and 58,121.18

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Solution

The fourth proportional to 101,142.20, 139,574.94 and 58,121.18 is: 80,206.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,142.20 : 139,574.94 = 58,121.18 : x
  2. Step 2: Convert to fraction form
    101,142.20/139,574.94 = 58,121.18/x
  3. Step 3: Cross multiply
    101,142.20x = 139,574.94 × 58,121.18
  4. Step 4: Simplify right side
    101,142.20x = 8,112,259,513.35
  5. Step 5: Solve for x
    x = 8,112,259,513.35/101,142.20
  6. Step 6: Final answer
    x = 80,206.48

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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.