Home / 100,732.90-139,008.62-54,791.02

Finding the Fourth Proportional to 100,732.90, 139,008.62 and 54,791.02

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Solution

The fourth proportional to 100,732.90, 139,008.62 and 54,791.02 is: 75,610.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,732.90 : 139,008.62 = 54,791.02 : x
  2. Step 2: Convert to fraction form
    100,732.90/139,008.62 = 54,791.02/x
  3. Step 3: Cross multiply
    100,732.90x = 139,008.62 × 54,791.02
  4. Step 4: Simplify right side
    100,732.90x = 7,616,424,078.59
  5. Step 5: Solve for x
    x = 7,616,424,078.59/100,732.90
  6. Step 6: Final answer
    x = 75,610.09

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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.