Home / 109,939.20-164,811.60-65,518.80

Finding the Fourth Proportional to 109,939.20, 164,811.60 and 65,518.80

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Solution

The fourth proportional to 109,939.20, 164,811.60 and 65,518.80 is: 98,220.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,939.20 : 164,811.60 = 65,518.80 : x
  2. Step 2: Convert to fraction form
    109,939.20/164,811.60 = 65,518.80/x
  3. Step 3: Cross multiply
    109,939.20x = 164,811.60 × 65,518.80
  4. Step 4: Simplify right side
    109,939.20x = 10,798,258,258.08
  5. Step 5: Solve for x
    x = 10,798,258,258.08/109,939.20
  6. Step 6: Final answer
    x = 98,220.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.