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Finding the Fourth Proportional to 113,980.20, 171,019.50 and 61,379.20

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Solution

The fourth proportional to 113,980.20, 171,019.50 and 61,379.20 is: 92,095.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,980.20 : 171,019.50 = 61,379.20 : x
  2. Step 2: Convert to fraction form
    113,980.20/171,019.50 = 61,379.20/x
  3. Step 3: Cross multiply
    113,980.20x = 171,019.50 × 61,379.20
  4. Step 4: Simplify right side
    113,980.20x = 10,497,040,094.40
  5. Step 5: Solve for x
    x = 10,497,040,094.40/113,980.20
  6. Step 6: Final answer
    x = 92,095.29

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1.5x scale

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.