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Finding the Fourth Proportional to 148,538.80, 222,808.20 and 115,361.20

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Solution

The fourth proportional to 148,538.80, 222,808.20 and 115,361.20 is: 173,041.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,538.80 : 222,808.20 = 115,361.20 : x
  2. Step 2: Convert to fraction form
    148,538.80/222,808.20 = 115,361.20/x
  3. Step 3: Cross multiply
    148,538.80x = 222,808.20 × 115,361.20
  4. Step 4: Simplify right side
    148,538.80x = 25,703,421,321.84
  5. Step 5: Solve for x
    x = 25,703,421,321.84/148,538.80
  6. Step 6: Final answer
    x = 173,041.80

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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.