Home / 153,910.41-212,326.97-90,221.33

Finding the Fourth Proportional to 153,910.41, 212,326.97 and 90,221.33

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Solution

The fourth proportional to 153,910.41, 212,326.97 and 90,221.33 is: 124,464.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,910.41 : 212,326.97 = 90,221.33 : x
  2. Step 2: Convert to fraction form
    153,910.41/212,326.97 = 90,221.33/x
  3. Step 3: Cross multiply
    153,910.41x = 212,326.97 × 90,221.33
  4. Step 4: Simplify right side
    153,910.41x = 19,156,420,115.53
  5. Step 5: Solve for x
    x = 19,156,420,115.53/153,910.41
  6. Step 6: Final answer
    x = 124,464.75

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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.