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Finding the Fourth Proportional to 103,191.37, 154,787.22 and 28,312.54

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Solution

The fourth proportional to 103,191.37, 154,787.22 and 28,312.54 is: 42,468.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,191.37 : 154,787.22 = 28,312.54 : x
  2. Step 2: Convert to fraction form
    103,191.37/154,787.22 = 28,312.54/x
  3. Step 3: Cross multiply
    103,191.37x = 154,787.22 × 28,312.54
  4. Step 4: Simplify right side
    103,191.37x = 4,382,418,970.77
  5. Step 5: Solve for x
    x = 4,382,418,970.77/103,191.37
  6. Step 6: Final answer
    x = 42,468.85

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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.