Home / 154,664.93-213,427.50-90,990.43

Finding the Fourth Proportional to 154,664.93, 213,427.50 and 90,990.43

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Solution

The fourth proportional to 154,664.93, 213,427.50 and 90,990.43 is: 125,560.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,664.93 : 213,427.50 = 90,990.43 : x
  2. Step 2: Convert to fraction form
    154,664.93/213,427.50 = 90,990.43/x
  3. Step 3: Cross multiply
    154,664.93x = 213,427.50 × 90,990.43
  4. Step 4: Simplify right side
    154,664.93x = 19,419,859,998.83
  5. Step 5: Solve for x
    x = 19,419,859,998.83/154,664.93
  6. Step 6: Final answer
    x = 125,560.85

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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.