Home / 105,535.20-158,168.40-43,135.20

Finding the Fourth Proportional to 105,535.20, 158,168.40 and 43,135.20

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Solution

The fourth proportional to 105,535.20, 158,168.40 and 43,135.20 is: 64,647.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,535.20 : 158,168.40 = 43,135.20 : x
  2. Step 2: Convert to fraction form
    105,535.20/158,168.40 = 43,135.20/x
  3. Step 3: Cross multiply
    105,535.20x = 158,168.40 × 43,135.20
  4. Step 4: Simplify right side
    105,535.20x = 6,822,625,567.68
  5. Step 5: Solve for x
    x = 6,822,625,567.68/105,535.20
  6. Step 6: Final answer
    x = 64,647.87

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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.