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Finding the Fourth Proportional to 130,163.61, 195,245.42 and 67,955.61

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Solution

The fourth proportional to 130,163.61, 195,245.42 and 67,955.61 is: 101,933.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,163.61 : 195,245.42 = 67,955.61 : x
  2. Step 2: Convert to fraction form
    130,163.61/195,245.42 = 67,955.61/x
  3. Step 3: Cross multiply
    130,163.61x = 195,245.42 × 67,955.61
  4. Step 4: Simplify right side
    130,163.61x = 13,268,021,615.81
  5. Step 5: Solve for x
    x = 13,268,021,615.81/130,163.61
  6. Step 6: Final answer
    x = 101,933.42

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Similar ratio
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1.5x scale

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.