Home / 100,974.13-139,344.31-58,557.27

Finding the Fourth Proportional to 100,974.13, 139,344.31 and 58,557.27

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Solution

The fourth proportional to 100,974.13, 139,344.31 and 58,557.27 is: 80,809.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,974.13 : 139,344.31 = 58,557.27 : x
  2. Step 2: Convert to fraction form
    100,974.13/139,344.31 = 58,557.27/x
  3. Step 3: Cross multiply
    100,974.13x = 139,344.31 × 58,557.27
  4. Step 4: Simplify right side
    100,974.13x = 8,159,622,383.63
  5. Step 5: Solve for x
    x = 8,159,622,383.63/100,974.13
  6. Step 6: Final answer
    x = 80,809.04

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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.