Home / 100,328.31-138,405.36-60,033.96

Finding the Fourth Proportional to 100,328.31, 138,405.36 and 60,033.96

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Solution

The fourth proportional to 100,328.31, 138,405.36 and 60,033.96 is: 82,818.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,328.31 : 138,405.36 = 60,033.96 : x
  2. Step 2: Convert to fraction form
    100,328.31/138,405.36 = 60,033.96/x
  3. Step 3: Cross multiply
    100,328.31x = 138,405.36 × 60,033.96
  4. Step 4: Simplify right side
    100,328.31x = 8,309,021,846.03
  5. Step 5: Solve for x
    x = 8,309,021,846.03/100,328.31
  6. Step 6: Final answer
    x = 82,818.32

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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.