Home / 80,106.36-120,161.94-20,941.08

Finding the Fourth Proportional to 80,106.36, 120,161.94 and 20,941.08

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Solution

The fourth proportional to 80,106.36, 120,161.94 and 20,941.08 is: 31,412.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,106.36 : 120,161.94 = 20,941.08 : x
  2. Step 2: Convert to fraction form
    80,106.36/120,161.94 = 20,941.08/x
  3. Step 3: Cross multiply
    80,106.36x = 120,161.94 × 20,941.08
  4. Step 4: Simplify right side
    80,106.36x = 2,516,320,798.50
  5. Step 5: Solve for x
    x = 2,516,320,798.50/80,106.36
  6. Step 6: Final answer
    x = 31,412.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.