Home / 127,260.40-190,890.60-120,845.20

Finding the Fourth Proportional to 127,260.40, 190,890.60 and 120,845.20

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Solution

The fourth proportional to 127,260.40, 190,890.60 and 120,845.20 is: 181,267.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,260.40 : 190,890.60 = 120,845.20 : x
  2. Step 2: Convert to fraction form
    127,260.40/190,890.60 = 120,845.20/x
  3. Step 3: Cross multiply
    127,260.40x = 190,890.60 × 120,845.20
  4. Step 4: Simplify right side
    127,260.40x = 23,068,212,735.12
  5. Step 5: Solve for x
    x = 23,068,212,735.12/127,260.40
  6. Step 6: Final answer
    x = 181,267.80

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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.