Home / 118,836.48-163,993.80-65,121.36

Finding the Fourth Proportional to 118,836.48, 163,993.80 and 65,121.36

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Solution

The fourth proportional to 118,836.48, 163,993.80 and 65,121.36 is: 89,867.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,836.48 : 163,993.80 = 65,121.36 : x
  2. Step 2: Convert to fraction form
    118,836.48/163,993.80 = 65,121.36/x
  3. Step 3: Cross multiply
    118,836.48x = 163,993.80 × 65,121.36
  4. Step 4: Simplify right side
    118,836.48x = 10,679,499,287.57
  5. Step 5: Solve for x
    x = 10,679,499,287.57/118,836.48
  6. Step 6: Final answer
    x = 89,867.18

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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.