Home / 154,352.36-212,938.67-90,661.44

Finding the Fourth Proportional to 154,352.36, 212,938.67 and 90,661.44

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Solution

The fourth proportional to 154,352.36, 212,938.67 and 90,661.44 is: 125,073.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,352.36 : 212,938.67 = 90,661.44 : x
  2. Step 2: Convert to fraction form
    154,352.36/212,938.67 = 90,661.44/x
  3. Step 3: Cross multiply
    154,352.36x = 212,938.67 × 90,661.44
  4. Step 4: Simplify right side
    154,352.36x = 19,305,326,000.58
  5. Step 5: Solve for x
    x = 19,305,326,000.58/154,352.36
  6. Step 6: Final answer
    x = 125,073.09

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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.