Home / 109,678.80-164,561.40-43,107.60

Finding the Fourth Proportional to 109,678.80, 164,561.40 and 43,107.60

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Solution

The fourth proportional to 109,678.80, 164,561.40 and 43,107.60 is: 64,678.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,678.80 : 164,561.40 = 43,107.60 : x
  2. Step 2: Convert to fraction form
    109,678.80/164,561.40 = 43,107.60/x
  3. Step 3: Cross multiply
    109,678.80x = 164,561.40 × 43,107.60
  4. Step 4: Simplify right side
    109,678.80x = 7,093,847,006.64
  5. Step 5: Solve for x
    x = 7,093,847,006.64/109,678.80
  6. Step 6: Final answer
    x = 64,678.38

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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.