Home / 105,540.20-158,175.90-43,140.20

Finding the Fourth Proportional to 105,540.20, 158,175.90 and 43,140.20

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Solution

The fourth proportional to 105,540.20, 158,175.90 and 43,140.20 is: 64,655.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,540.20 : 158,175.90 = 43,140.20 : x
  2. Step 2: Convert to fraction form
    105,540.20/158,175.90 = 43,140.20/x
  3. Step 3: Cross multiply
    105,540.20x = 158,175.90 × 43,140.20
  4. Step 4: Simplify right side
    105,540.20x = 6,823,739,961.18
  5. Step 5: Solve for x
    x = 6,823,739,961.18/105,540.20
  6. Step 6: Final answer
    x = 64,655.36

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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.