Home / 144,297.72-199,135.26-80,638.20

Finding the Fourth Proportional to 144,297.72, 199,135.26 and 80,638.20

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Solution

The fourth proportional to 144,297.72, 199,135.26 and 80,638.20 is: 111,283.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,297.72 : 199,135.26 = 80,638.20 : x
  2. Step 2: Convert to fraction form
    144,297.72/199,135.26 = 80,638.20/x
  3. Step 3: Cross multiply
    144,297.72x = 199,135.26 × 80,638.20
  4. Step 4: Simplify right side
    144,297.72x = 16,057,908,922.93
  5. Step 5: Solve for x
    x = 16,057,908,922.93/144,297.72
  6. Step 6: Final answer
    x = 111,283.18

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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.