Home / 107,855.80-161,636.02-68,440.60

Finding the Fourth Proportional to 107,855.80, 161,636.02 and 68,440.60

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Solution

The fourth proportional to 107,855.80, 161,636.02 and 68,440.60 is: 102,567.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,855.80 : 161,636.02 = 68,440.60 : x
  2. Step 2: Convert to fraction form
    107,855.80/161,636.02 = 68,440.60/x
  3. Step 3: Cross multiply
    107,855.80x = 161,636.02 × 68,440.60
  4. Step 4: Simplify right side
    107,855.80x = 11,062,466,190.41
  5. Step 5: Solve for x
    x = 11,062,466,190.41/107,855.80
  6. Step 6: Final answer
    x = 102,567.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.