Home / 149,062.58-205,687.64-100,769.55

Finding the Fourth Proportional to 149,062.58, 205,687.64 and 100,769.55

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Solution

The fourth proportional to 149,062.58, 205,687.64 and 100,769.55 is: 139,049.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,062.58 : 205,687.64 = 100,769.55 : x
  2. Step 2: Convert to fraction form
    149,062.58/205,687.64 = 100,769.55/x
  3. Step 3: Cross multiply
    149,062.58x = 205,687.64 × 100,769.55
  4. Step 4: Simplify right side
    149,062.58x = 20,727,050,923.36
  5. Step 5: Solve for x
    x = 20,727,050,923.36/149,062.58
  6. Step 6: Final answer
    x = 139,049.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.