Home / 100,953.27-139,315.55-55,012.60

Finding the Fourth Proportional to 100,953.27, 139,315.55 and 55,012.60

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Solution

The fourth proportional to 100,953.27, 139,315.55 and 55,012.60 is: 75,917.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,953.27 : 139,315.55 = 55,012.60 : x
  2. Step 2: Convert to fraction form
    100,953.27/139,315.55 = 55,012.60/x
  3. Step 3: Cross multiply
    100,953.27x = 139,315.55 × 55,012.60
  4. Step 4: Simplify right side
    100,953.27x = 7,664,110,625.93
  5. Step 5: Solve for x
    x = 7,664,110,625.93/100,953.27
  6. Step 6: Final answer
    x = 75,917.41

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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.