Home / 113,979.20-171,018-61,378.20

Finding the Fourth Proportional to 113,979.20, 171,018 and 61,378.20

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Solution

The fourth proportional to 113,979.20, 171,018 and 61,378.20 is: 92,093.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,979.20 : 171,018 = 61,378.20 : x
  2. Step 2: Convert to fraction form
    113,979.20/171,018 = 61,378.20/x
  3. Step 3: Cross multiply
    113,979.20x = 171,018 × 61,378.20
  4. Step 4: Simplify right side
    113,979.20x = 10,496,777,007.60
  5. Step 5: Solve for x
    x = 10,496,777,007.60/113,979.20
  6. Step 6: Final answer
    x = 92,093.80

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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.