Home / 100,983.26-139,356.90-58,566.39

Finding the Fourth Proportional to 100,983.26, 139,356.90 and 58,566.39

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Solution

The fourth proportional to 100,983.26, 139,356.90 and 58,566.39 is: 80,821.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,983.26 : 139,356.90 = 58,566.39 : x
  2. Step 2: Convert to fraction form
    100,983.26/139,356.90 = 58,566.39/x
  3. Step 3: Cross multiply
    100,983.26x = 139,356.90 × 58,566.39
  4. Step 4: Simplify right side
    100,983.26x = 8,161,630,554.59
  5. Step 5: Solve for x
    x = 8,161,630,554.59/100,983.26
  6. Step 6: Final answer
    x = 80,821.62

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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.