Home / 127,431.68-191,073.72-43,163.60

Finding the Fourth Proportional to 127,431.68, 191,073.72 and 43,163.60

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Solution

The fourth proportional to 127,431.68, 191,073.72 and 43,163.60 is: 64,720.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,431.68 : 191,073.72 = 43,163.60 : x
  2. Step 2: Convert to fraction form
    127,431.68/191,073.72 = 43,163.60/x
  3. Step 3: Cross multiply
    127,431.68x = 191,073.72 × 43,163.60
  4. Step 4: Simplify right side
    127,431.68x = 8,247,429,620.59
  5. Step 5: Solve for x
    x = 8,247,429,620.59/127,431.68
  6. Step 6: Final answer
    x = 64,720.40

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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.