Home / 100,726.68-139,006.44-55,408.23

Finding the Fourth Proportional to 100,726.68, 139,006.44 and 55,408.23

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Solution

The fourth proportional to 100,726.68, 139,006.44 and 55,408.23 is: 76,465.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,726.68 : 139,006.44 = 55,408.23 : x
  2. Step 2: Convert to fraction form
    100,726.68/139,006.44 = 55,408.23/x
  3. Step 3: Cross multiply
    100,726.68x = 139,006.44 × 55,408.23
  4. Step 4: Simplify right side
    100,726.68x = 7,702,100,799.00
  5. Step 5: Solve for x
    x = 7,702,100,799.00/100,726.68
  6. Step 6: Final answer
    x = 76,465.35

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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.