Home / 100,904.94-139,249.80-55,583.13

Finding the Fourth Proportional to 100,904.94, 139,249.80 and 55,583.13

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Solution

The fourth proportional to 100,904.94, 139,249.80 and 55,583.13 is: 76,705.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,904.94 : 139,249.80 = 55,583.13 : x
  2. Step 2: Convert to fraction form
    100,904.94/139,249.80 = 55,583.13/x
  3. Step 3: Cross multiply
    100,904.94x = 139,249.80 × 55,583.13
  4. Step 4: Simplify right side
    100,904.94x = 7,739,939,735.87
  5. Step 5: Solve for x
    x = 7,739,939,735.87/100,904.94
  6. Step 6: Final answer
    x = 76,705.26

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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.