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Finding the Fourth Proportional to 103,189.58, 154,784.58 and 28,310.76

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Solution

The fourth proportional to 103,189.58, 154,784.58 and 28,310.76 is: 42,466.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,189.58 : 154,784.58 = 28,310.76 : x
  2. Step 2: Convert to fraction form
    103,189.58/154,784.58 = 28,310.76/x
  3. Step 3: Cross multiply
    103,189.58x = 154,784.58 × 28,310.76
  4. Step 4: Simplify right side
    103,189.58x = 4,382,069,096.08
  5. Step 5: Solve for x
    x = 4,382,069,096.08/103,189.58
  6. Step 6: Final answer
    x = 42,466.20

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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.