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Finding the Fourth Proportional to 125,831, 173,648 and 69,243.60

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Solution

The fourth proportional to 125,831, 173,648 and 69,243.60 is: 95,556.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,831 : 173,648 = 69,243.60 : x
  2. Step 2: Convert to fraction form
    125,831/173,648 = 69,243.60/x
  3. Step 3: Cross multiply
    125,831x = 173,648 × 69,243.60
  4. Step 4: Simplify right side
    125,831x = 12,024,012,652.80
  5. Step 5: Solve for x
    x = 12,024,012,652.80/125,831
  6. Step 6: Final answer
    x = 95,556.84

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1.5x scale

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.