Home / 143,255.03-197,486.64-100,681.43

Finding the Fourth Proportional to 143,255.03, 197,486.64 and 100,681.43

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Solution

The fourth proportional to 143,255.03, 197,486.64 and 100,681.43 is: 138,796.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,255.03 : 197,486.64 = 100,681.43 : x
  2. Step 2: Convert to fraction form
    143,255.03/197,486.64 = 100,681.43/x
  3. Step 3: Cross multiply
    143,255.03x = 197,486.64 × 100,681.43
  4. Step 4: Simplify right side
    143,255.03x = 19,883,237,321.10
  5. Step 5: Solve for x
    x = 19,883,237,321.10/143,255.03
  6. Step 6: Final answer
    x = 138,796.09

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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.