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Finding the Fourth Proportional to 115,400.40, 173,273.40 and 80,494.80

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Solution

The fourth proportional to 115,400.40, 173,273.40 and 80,494.80 is: 120,862.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,400.40 : 173,273.40 = 80,494.80 : x
  2. Step 2: Convert to fraction form
    115,400.40/173,273.40 = 80,494.80/x
  3. Step 3: Cross multiply
    115,400.40x = 173,273.40 × 80,494.80
  4. Step 4: Simplify right side
    115,400.40x = 13,947,607,678.32
  5. Step 5: Solve for x
    x = 13,947,607,678.32/115,400.40
  6. Step 6: Final answer
    x = 120,862.73

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1.5x scale

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.