Home / 118,231.92-163,226.34-81,986.04

Finding the Fourth Proportional to 118,231.92, 163,226.34 and 81,986.04

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Solution

The fourth proportional to 118,231.92, 163,226.34 and 81,986.04 is: 113,186.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,231.92 : 163,226.34 = 81,986.04 : x
  2. Step 2: Convert to fraction form
    118,231.92/163,226.34 = 81,986.04/x
  3. Step 3: Cross multiply
    118,231.92x = 163,226.34 × 81,986.04
  4. Step 4: Simplify right side
    118,231.92x = 13,382,281,240.29
  5. Step 5: Solve for x
    x = 13,382,281,240.29/118,231.92
  6. Step 6: Final answer
    x = 113,186.70

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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.