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Finding the Fourth Proportional to 103,208, 154,682.48 and 55,821.20

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Solution

The fourth proportional to 103,208, 154,682.48 and 55,821.20 is: 83,661.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,208 : 154,682.48 = 55,821.20 : x
  2. Step 2: Convert to fraction form
    103,208/154,682.48 = 55,821.20/x
  3. Step 3: Cross multiply
    103,208x = 154,682.48 × 55,821.20
  4. Step 4: Simplify right side
    103,208x = 8,634,561,652.58
  5. Step 5: Solve for x
    x = 8,634,561,652.58/103,208
  6. Step 6: Final answer
    x = 83,661.75

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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.