Home / 154,172.06-231,152.84-82,135.74

Finding the Fourth Proportional to 154,172.06, 231,152.84 and 82,135.74

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Solution

The fourth proportional to 154,172.06, 231,152.84 and 82,135.74 is: 123,147.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,172.06 : 231,152.84 = 82,135.74 : x
  2. Step 2: Convert to fraction form
    154,172.06/231,152.84 = 82,135.74/x
  3. Step 3: Cross multiply
    154,172.06x = 231,152.84 × 82,135.74
  4. Step 4: Simplify right side
    154,172.06x = 18,985,909,566.50
  5. Step 5: Solve for x
    x = 18,985,909,566.50/154,172.06
  6. Step 6: Final answer
    x = 123,147.54

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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.