Home / 146,138.06-218,573.84-86,023.27

Finding the Fourth Proportional to 146,138.06, 218,573.84 and 86,023.27

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Solution

The fourth proportional to 146,138.06, 218,573.84 and 86,023.27 is: 128,662.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,138.06 : 218,573.84 = 86,023.27 : x
  2. Step 2: Convert to fraction form
    146,138.06/218,573.84 = 86,023.27/x
  3. Step 3: Cross multiply
    146,138.06x = 218,573.84 × 86,023.27
  4. Step 4: Simplify right side
    146,138.06x = 18,802,436,941.53
  5. Step 5: Solve for x
    x = 18,802,436,941.53/146,138.06
  6. Step 6: Final answer
    x = 128,662.15

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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.