Home / 189,207.75-284,133-126,431.22

Finding the Fourth Proportional to 189,207.75, 284,133 and 126,431.22

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Solution

The fourth proportional to 189,207.75, 284,133 and 126,431.22 is: 189,861.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,207.75 : 284,133 = 126,431.22 : x
  2. Step 2: Convert to fraction form
    189,207.75/284,133 = 126,431.22/x
  3. Step 3: Cross multiply
    189,207.75x = 284,133 × 126,431.22
  4. Step 4: Simplify right side
    189,207.75x = 35,923,281,832.26
  5. Step 5: Solve for x
    x = 35,923,281,832.26/189,207.75
  6. Step 6: Final answer
    x = 189,861.58

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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.