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Finding the Fourth Proportional to 154,365.94, 213,058.08 and 100,554.94

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Solution

The fourth proportional to 154,365.94, 213,058.08 and 100,554.94 is: 138,787.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,365.94 : 213,058.08 = 100,554.94 : x
  2. Step 2: Convert to fraction form
    154,365.94/213,058.08 = 100,554.94/x
  3. Step 3: Cross multiply
    154,365.94x = 213,058.08 × 100,554.94
  4. Step 4: Simplify right side
    154,365.94x = 21,424,042,450.92
  5. Step 5: Solve for x
    x = 21,424,042,450.92/154,365.94
  6. Step 6: Final answer
    x = 138,787.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.