Home / 139,556.79-209,240.44-70,999.84

Finding the Fourth Proportional to 139,556.79, 209,240.44 and 70,999.84

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Solution

The fourth proportional to 139,556.79, 209,240.44 and 70,999.84 is: 106,451.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,556.79 : 209,240.44 = 70,999.84 : x
  2. Step 2: Convert to fraction form
    139,556.79/209,240.44 = 70,999.84/x
  3. Step 3: Cross multiply
    139,556.79x = 209,240.44 × 70,999.84
  4. Step 4: Simplify right side
    139,556.79x = 14,856,037,761.53
  5. Step 5: Solve for x
    x = 14,856,037,761.53/139,556.79
  6. Step 6: Final answer
    x = 106,451.56

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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.