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Finding the Fourth Proportional to 127,863.80, 191,723.70 and 48,980.60

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Solution

The fourth proportional to 127,863.80, 191,723.70 and 48,980.60 is: 73,443.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,863.80 : 191,723.70 = 48,980.60 : x
  2. Step 2: Convert to fraction form
    127,863.80/191,723.70 = 48,980.60/x
  3. Step 3: Cross multiply
    127,863.80x = 191,723.70 × 48,980.60
  4. Step 4: Simplify right side
    127,863.80x = 9,390,741,860.22
  5. Step 5: Solve for x
    x = 9,390,741,860.22/127,863.80
  6. Step 6: Final answer
    x = 73,443.32

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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.