Home / 104,126.78-143,642.03-61,078.12

Finding the Fourth Proportional to 104,126.78, 143,642.03 and 61,078.12

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Solution

The fourth proportional to 104,126.78, 143,642.03 and 61,078.12 is: 84,256.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,126.78 : 143,642.03 = 61,078.12 : x
  2. Step 2: Convert to fraction form
    104,126.78/143,642.03 = 61,078.12/x
  3. Step 3: Cross multiply
    104,126.78x = 143,642.03 × 61,078.12
  4. Step 4: Simplify right side
    104,126.78x = 8,773,384,480.89
  5. Step 5: Solve for x
    x = 8,773,384,480.89/104,126.78
  6. Step 6: Final answer
    x = 84,256.75

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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.