Home / 109,608.20-164,120.70-69,950.60

Finding the Fourth Proportional to 109,608.20, 164,120.70 and 69,950.60

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Solution

The fourth proportional to 109,608.20, 164,120.70 and 69,950.60 is: 104,739.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,608.20 : 164,120.70 = 69,950.60 : x
  2. Step 2: Convert to fraction form
    109,608.20/164,120.70 = 69,950.60/x
  3. Step 3: Cross multiply
    109,608.20x = 164,120.70 × 69,950.60
  4. Step 4: Simplify right side
    109,608.20x = 11,480,341,437.42
  5. Step 5: Solve for x
    x = 11,480,341,437.42/109,608.20
  6. Step 6: Final answer
    x = 104,739.80

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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.