Home / 139,205.25-192,103.38-75,543.05

Finding the Fourth Proportional to 139,205.25, 192,103.38 and 75,543.05

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Solution

The fourth proportional to 139,205.25, 192,103.38 and 75,543.05 is: 104,249.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,205.25 : 192,103.38 = 75,543.05 : x
  2. Step 2: Convert to fraction form
    139,205.25/192,103.38 = 75,543.05/x
  3. Step 3: Cross multiply
    139,205.25x = 192,103.38 × 75,543.05
  4. Step 4: Simplify right side
    139,205.25x = 14,512,075,720.77
  5. Step 5: Solve for x
    x = 14,512,075,720.77/139,205.25
  6. Step 6: Final answer
    x = 104,249.49

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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.