Home / 154,891.22-213,724.49-91,220.36

Finding the Fourth Proportional to 154,891.22, 213,724.49 and 91,220.36

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Solution

The fourth proportional to 154,891.22, 213,724.49 and 91,220.36 is: 125,869.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,891.22 : 213,724.49 = 91,220.36 : x
  2. Step 2: Convert to fraction form
    154,891.22/213,724.49 = 91,220.36/x
  3. Step 3: Cross multiply
    154,891.22x = 213,724.49 × 91,220.36
  4. Step 4: Simplify right side
    154,891.22x = 19,496,023,393.89
  5. Step 5: Solve for x
    x = 19,496,023,393.89/154,891.22
  6. Step 6: Final answer
    x = 125,869.14

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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.