Home / 153,933.70-212,476.89-90,297.22

Finding the Fourth Proportional to 153,933.70, 212,476.89 and 90,297.22

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Solution

The fourth proportional to 153,933.70, 212,476.89 and 90,297.22 is: 124,638.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,933.70 : 212,476.89 = 90,297.22 : x
  2. Step 2: Convert to fraction form
    153,933.70/212,476.89 = 90,297.22/x
  3. Step 3: Cross multiply
    153,933.70x = 212,476.89 × 90,297.22
  4. Step 4: Simplify right side
    153,933.70x = 19,186,072,481.25
  5. Step 5: Solve for x
    x = 19,186,072,481.25/153,933.70
  6. Step 6: Final answer
    x = 124,638.55

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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.