Home / 189,990.40-262,185.60-105,105.64

Finding the Fourth Proportional to 189,990.40, 262,185.60 and 105,105.64

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Solution

The fourth proportional to 189,990.40, 262,185.60 and 105,105.64 is: 145,045.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,990.40 : 262,185.60 = 105,105.64 : x
  2. Step 2: Convert to fraction form
    189,990.40/262,185.60 = 105,105.64/x
  3. Step 3: Cross multiply
    189,990.40x = 262,185.60 × 105,105.64
  4. Step 4: Simplify right side
    189,990.40x = 27,557,185,286.78
  5. Step 5: Solve for x
    x = 27,557,185,286.78/189,990.40
  6. Step 6: Final answer
    x = 145,045.15

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1.5x scale

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.