Home / 100,828.73-139,128.23-58,379.06

Finding the Fourth Proportional to 100,828.73, 139,128.23 and 58,379.06

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Solution

The fourth proportional to 100,828.73, 139,128.23 and 58,379.06 is: 80,554.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,828.73 : 139,128.23 = 58,379.06 : x
  2. Step 2: Convert to fraction form
    100,828.73/139,128.23 = 58,379.06/x
  3. Step 3: Cross multiply
    100,828.73x = 139,128.23 × 58,379.06
  4. Step 4: Simplify right side
    100,828.73x = 8,122,175,780.63
  5. Step 5: Solve for x
    x = 8,122,175,780.63/100,828.73
  6. Step 6: Final answer
    x = 80,554.18

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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.