Home / 118,742.36-163,879.62-68,441.72

Finding the Fourth Proportional to 118,742.36, 163,879.62 and 68,441.72

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Solution

The fourth proportional to 118,742.36, 163,879.62 and 68,441.72 is: 94,458.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,742.36 : 163,879.62 = 68,441.72 : x
  2. Step 2: Convert to fraction form
    118,742.36/163,879.62 = 68,441.72/x
  3. Step 3: Cross multiply
    118,742.36x = 163,879.62 × 68,441.72
  4. Step 4: Simplify right side
    118,742.36x = 11,216,203,065.75
  5. Step 5: Solve for x
    x = 11,216,203,065.75/118,742.36
  6. Step 6: Final answer
    x = 94,458.31

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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.