Home / 103,186.83-154,780.25-82,541.55

Finding the Fourth Proportional to 103,186.83, 154,780.25 and 82,541.55

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Solution

The fourth proportional to 103,186.83, 154,780.25 and 82,541.55 is: 123,812.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,186.83 : 154,780.25 = 82,541.55 : x
  2. Step 2: Convert to fraction form
    103,186.83/154,780.25 = 82,541.55/x
  3. Step 3: Cross multiply
    103,186.83x = 154,780.25 × 82,541.55
  4. Step 4: Simplify right side
    103,186.83x = 12,775,801,331.68
  5. Step 5: Solve for x
    x = 12,775,801,331.68/103,186.83
  6. Step 6: Final answer
    x = 123,812.33

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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.