Home / 115,727.40-173,763.90-80,821.80

Finding the Fourth Proportional to 115,727.40, 173,763.90 and 80,821.80

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Solution

The fourth proportional to 115,727.40, 173,763.90 and 80,821.80 is: 121,353.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,727.40 : 173,763.90 = 80,821.80 : x
  2. Step 2: Convert to fraction form
    115,727.40/173,763.90 = 80,821.80/x
  3. Step 3: Cross multiply
    115,727.40x = 173,763.90 × 80,821.80
  4. Step 4: Simplify right side
    115,727.40x = 14,043,911,173.02
  5. Step 5: Solve for x
    x = 14,043,911,173.02/115,727.40
  6. Step 6: Final answer
    x = 121,353.38

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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.