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Finding the Fourth Proportional to 146,054.40, 218,644.20 and 86,859.60

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Solution

The fourth proportional to 146,054.40, 218,644.20 and 86,859.60 is: 130,029.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,054.40 : 218,644.20 = 86,859.60 : x
  2. Step 2: Convert to fraction form
    146,054.40/218,644.20 = 86,859.60/x
  3. Step 3: Cross multiply
    146,054.40x = 218,644.20 × 86,859.60
  4. Step 4: Simplify right side
    146,054.40x = 18,991,347,754.32
  5. Step 5: Solve for x
    x = 18,991,347,754.32/146,054.40
  6. Step 6: Final answer
    x = 130,029.28

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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.