Home / 115,999.20-160,071.31-68,243.32

Finding the Fourth Proportional to 115,999.20, 160,071.31 and 68,243.32

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Solution

The fourth proportional to 115,999.20, 160,071.31 and 68,243.32 is: 94,171.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,999.20 : 160,071.31 = 68,243.32 : x
  2. Step 2: Convert to fraction form
    115,999.20/160,071.31 = 68,243.32/x
  3. Step 3: Cross multiply
    115,999.20x = 160,071.31 × 68,243.32
  4. Step 4: Simplify right side
    115,999.20x = 10,923,797,631.15
  5. Step 5: Solve for x
    x = 10,923,797,631.15/115,999.20
  6. Step 6: Final answer
    x = 94,171.32

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1.5x scale

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.