Home / 103,753.08-143,137.26-66,020.28

Finding the Fourth Proportional to 103,753.08, 143,137.26 and 66,020.28

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Solution

The fourth proportional to 103,753.08, 143,137.26 and 66,020.28 is: 91,081.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,753.08 : 143,137.26 = 66,020.28 : x
  2. Step 2: Convert to fraction form
    103,753.08/143,137.26 = 66,020.28/x
  3. Step 3: Cross multiply
    103,753.08x = 143,137.26 × 66,020.28
  4. Step 4: Simplify right side
    103,753.08x = 9,449,961,983.63
  5. Step 5: Solve for x
    x = 9,449,961,983.63/103,753.08
  6. Step 6: Final answer
    x = 91,081.27

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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.