Home / 212,058.20-318,087.30-117,579.80

Finding the Fourth Proportional to 212,058.20, 318,087.30 and 117,579.80

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Solution

The fourth proportional to 212,058.20, 318,087.30 and 117,579.80 is: 176,369.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,058.20 : 318,087.30 = 117,579.80 : x
  2. Step 2: Convert to fraction form
    212,058.20/318,087.30 = 117,579.80/x
  3. Step 3: Cross multiply
    212,058.20x = 318,087.30 × 117,579.80
  4. Step 4: Simplify right side
    212,058.20x = 37,400,641,116.54
  5. Step 5: Solve for x
    x = 37,400,641,116.54/212,058.20
  6. Step 6: Final answer
    x = 176,369.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.