Home / 102,003.21-140,720.78-63,696.26

Finding the Fourth Proportional to 102,003.21, 140,720.78 and 63,696.26

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Solution

The fourth proportional to 102,003.21, 140,720.78 and 63,696.26 is: 87,873.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,003.21 : 140,720.78 = 63,696.26 : x
  2. Step 2: Convert to fraction form
    102,003.21/140,720.78 = 63,696.26/x
  3. Step 3: Cross multiply
    102,003.21x = 140,720.78 × 63,696.26
  4. Step 4: Simplify right side
    102,003.21x = 8,963,387,390.28
  5. Step 5: Solve for x
    x = 8,963,387,390.28/102,003.21
  6. Step 6: Final answer
    x = 87,873.58

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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.