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Finding the Fourth Proportional to 161,231.88, 221,991.78 and 146,285.10

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Solution

The fourth proportional to 161,231.88, 221,991.78 and 146,285.10 is: 201,412.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,231.88 : 221,991.78 = 146,285.10 : x
  2. Step 2: Convert to fraction form
    161,231.88/221,991.78 = 146,285.10/x
  3. Step 3: Cross multiply
    161,231.88x = 221,991.78 × 146,285.10
  4. Step 4: Simplify right side
    161,231.88x = 32,474,089,736.48
  5. Step 5: Solve for x
    x = 32,474,089,736.48/161,231.88
  6. Step 6: Final answer
    x = 201,412.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.