Home / 190,268.55-285,405.66-90,439.02

Finding the Fourth Proportional to 190,268.55, 285,405.66 and 90,439.02

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Solution

The fourth proportional to 190,268.55, 285,405.66 and 90,439.02 is: 135,659.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,268.55 : 285,405.66 = 90,439.02 : x
  2. Step 2: Convert to fraction form
    190,268.55/285,405.66 = 90,439.02/x
  3. Step 3: Cross multiply
    190,268.55x = 285,405.66 × 90,439.02
  4. Step 4: Simplify right side
    190,268.55x = 25,811,808,192.85
  5. Step 5: Solve for x
    x = 25,811,808,192.85/190,268.55
  6. Step 6: Final answer
    x = 135,659.88

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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.