Home / 118,218.91-163,141.26-67,231.66

Finding the Fourth Proportional to 118,218.91, 163,141.26 and 67,231.66

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Solution

The fourth proportional to 118,218.91, 163,141.26 and 67,231.66 is: 92,779.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,218.91 : 163,141.26 = 67,231.66 : x
  2. Step 2: Convert to fraction form
    118,218.91/163,141.26 = 67,231.66/x
  3. Step 3: Cross multiply
    118,218.91x = 163,141.26 × 67,231.66
  4. Step 4: Simplify right side
    118,218.91x = 10,968,257,724.29
  5. Step 5: Solve for x
    x = 10,968,257,724.29/118,218.91
  6. Step 6: Final answer
    x = 92,779.22

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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.