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Finding the Fourth Proportional to 103,027.88, 154,529.82 and 28,145

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Solution

The fourth proportional to 103,027.88, 154,529.82 and 28,145 is: 42,214.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,027.88 : 154,529.82 = 28,145 : x
  2. Step 2: Convert to fraction form
    103,027.88/154,529.82 = 28,145/x
  3. Step 3: Cross multiply
    103,027.88x = 154,529.82 × 28,145
  4. Step 4: Simplify right side
    103,027.88x = 4,349,241,783.90
  5. Step 5: Solve for x
    x = 4,349,241,783.90/103,027.88
  6. Step 6: Final answer
    x = 42,214.22

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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.