Home / 143,297.93-197,542.71-100,143.44

Finding the Fourth Proportional to 143,297.93, 197,542.71 and 100,143.44

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Solution

The fourth proportional to 143,297.93, 197,542.71 and 100,143.44 is: 138,052.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,297.93 : 197,542.71 = 100,143.44 : x
  2. Step 2: Convert to fraction form
    143,297.93/197,542.71 = 100,143.44/x
  3. Step 3: Cross multiply
    143,297.93x = 197,542.71 × 100,143.44
  4. Step 4: Simplify right side
    143,297.93x = 19,782,605,538.61
  5. Step 5: Solve for x
    x = 19,782,605,538.61/143,297.93
  6. Step 6: Final answer
    x = 138,052.28

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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.