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Finding the Fourth Proportional to 126,978.93, 190,301.27 and 70,845.48

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Solution

The fourth proportional to 126,978.93, 190,301.27 and 70,845.48 is: 106,174.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,978.93 : 190,301.27 = 70,845.48 : x
  2. Step 2: Convert to fraction form
    126,978.93/190,301.27 = 70,845.48/x
  3. Step 3: Cross multiply
    126,978.93x = 190,301.27 × 70,845.48
  4. Step 4: Simplify right side
    126,978.93x = 13,481,984,463.53
  5. Step 5: Solve for x
    x = 13,481,984,463.53/126,978.93
  6. Step 6: Final answer
    x = 106,174.97

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.