Home / 127,268.40-190,902.60-80,727.60

Finding the Fourth Proportional to 127,268.40, 190,902.60 and 80,727.60

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Solution

The fourth proportional to 127,268.40, 190,902.60 and 80,727.60 is: 121,091.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,268.40 : 190,902.60 = 80,727.60 : x
  2. Step 2: Convert to fraction form
    127,268.40/190,902.60 = 80,727.60/x
  3. Step 3: Cross multiply
    127,268.40x = 190,902.60 × 80,727.60
  4. Step 4: Simplify right side
    127,268.40x = 15,411,108,731.76
  5. Step 5: Solve for x
    x = 15,411,108,731.76/127,268.40
  6. Step 6: Final answer
    x = 121,091.40

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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.