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Finding the Fourth Proportional to 127,997.60, 191,996.40 and 122,813.60

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Solution

The fourth proportional to 127,997.60, 191,996.40 and 122,813.60 is: 184,220.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,997.60 : 191,996.40 = 122,813.60 : x
  2. Step 2: Convert to fraction form
    127,997.60/191,996.40 = 122,813.60/x
  3. Step 3: Cross multiply
    127,997.60x = 191,996.40 × 122,813.60
  4. Step 4: Simplify right side
    127,997.60x = 23,579,769,071.04
  5. Step 5: Solve for x
    x = 23,579,769,071.04/127,997.60
  6. Step 6: Final answer
    x = 184,220.40

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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.