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Finding the Fourth Proportional to 101,555.22, 140,161.68 and 63,321

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Solution

The fourth proportional to 101,555.22, 140,161.68 and 63,321 is: 87,392.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,555.22 : 140,161.68 = 63,321 : x
  2. Step 2: Convert to fraction form
    101,555.22/140,161.68 = 63,321/x
  3. Step 3: Cross multiply
    101,555.22x = 140,161.68 × 63,321
  4. Step 4: Simplify right side
    101,555.22x = 8,875,177,739.28
  5. Step 5: Solve for x
    x = 8,875,177,739.28/101,555.22
  6. Step 6: Final answer
    x = 87,392.63

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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.