Home / 143,240.78-197,466.99-100,667.18

Finding the Fourth Proportional to 143,240.78, 197,466.99 and 100,667.18

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Solution

The fourth proportional to 143,240.78, 197,466.99 and 100,667.18 is: 138,776.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,240.78 : 197,466.99 = 100,667.18 : x
  2. Step 2: Convert to fraction form
    143,240.78/197,466.99 = 100,667.18/x
  3. Step 3: Cross multiply
    143,240.78x = 197,466.99 × 100,667.18
  4. Step 4: Simplify right side
    143,240.78x = 19,878,445,026.39
  5. Step 5: Solve for x
    x = 19,878,445,026.39/143,240.78
  6. Step 6: Final answer
    x = 138,776.44

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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.