Home / 109,974.80-165,005.40-43,403.60

Finding the Fourth Proportional to 109,974.80, 165,005.40 and 43,403.60

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Solution

The fourth proportional to 109,974.80, 165,005.40 and 43,403.60 is: 65,122.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,974.80 : 165,005.40 = 43,403.60 : x
  2. Step 2: Convert to fraction form
    109,974.80/165,005.40 = 43,403.60/x
  3. Step 3: Cross multiply
    109,974.80x = 165,005.40 × 43,403.60
  4. Step 4: Simplify right side
    109,974.80x = 7,161,828,379.44
  5. Step 5: Solve for x
    x = 7,161,828,379.44/109,974.80
  6. Step 6: Final answer
    x = 65,122.45

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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.