Home / 108,382.40-162,573.60-68,433.20

Finding the Fourth Proportional to 108,382.40, 162,573.60 and 68,433.20

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Solution

The fourth proportional to 108,382.40, 162,573.60 and 68,433.20 is: 102,649.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,382.40 : 162,573.60 = 68,433.20 : x
  2. Step 2: Convert to fraction form
    108,382.40/162,573.60 = 68,433.20/x
  3. Step 3: Cross multiply
    108,382.40x = 162,573.60 × 68,433.20
  4. Step 4: Simplify right side
    108,382.40x = 11,125,431,683.52
  5. Step 5: Solve for x
    x = 11,125,431,683.52/108,382.40
  6. Step 6: Final answer
    x = 102,649.80

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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.