Home / 154,142.36-212,717.91-90,481.22

Finding the Fourth Proportional to 154,142.36, 212,717.91 and 90,481.22

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Solution

The fourth proportional to 154,142.36, 212,717.91 and 90,481.22 is: 124,864.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,142.36 : 212,717.91 = 90,481.22 : x
  2. Step 2: Convert to fraction form
    154,142.36/212,717.91 = 90,481.22/x
  3. Step 3: Cross multiply
    154,142.36x = 212,717.91 × 90,481.22
  4. Step 4: Simplify right side
    154,142.36x = 19,246,974,949.06
  5. Step 5: Solve for x
    x = 19,246,974,949.06/154,142.36
  6. Step 6: Final answer
    x = 124,864.93

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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.