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Finding the Fourth Proportional to 103,216.58, 154,823.48 and 28,336.63

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Solution

The fourth proportional to 103,216.58, 154,823.48 and 28,336.63 is: 42,504.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,216.58 : 154,823.48 = 28,336.63 : x
  2. Step 2: Convert to fraction form
    103,216.58/154,823.48 = 28,336.63/x
  3. Step 3: Cross multiply
    103,216.58x = 154,823.48 × 28,336.63
  4. Step 4: Simplify right side
    103,216.58x = 4,387,175,526.39
  5. Step 5: Solve for x
    x = 4,387,175,526.39/103,216.58
  6. Step 6: Final answer
    x = 42,504.56

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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.