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Finding the Fourth Proportional to 103,240.84, 154,859.44 and 28,360.70

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Solution

The fourth proportional to 103,240.84, 154,859.44 and 28,360.70 is: 42,540.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,240.84 : 154,859.44 = 28,360.70 : x
  2. Step 2: Convert to fraction form
    103,240.84/154,859.44 = 28,360.70/x
  3. Step 3: Cross multiply
    103,240.84x = 154,859.44 × 28,360.70
  4. Step 4: Simplify right side
    103,240.84x = 4,391,922,120.01
  5. Step 5: Solve for x
    x = 4,391,922,120.01/103,240.84
  6. Step 6: Final answer
    x = 42,540.55

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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.