Home / 139,968.28-209,889.24-40,105.60

Finding the Fourth Proportional to 139,968.28, 209,889.24 and 40,105.60

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Solution

The fourth proportional to 139,968.28, 209,889.24 and 40,105.60 is: 60,140.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968.28 : 209,889.24 = 40,105.60 : x
  2. Step 2: Convert to fraction form
    139,968.28/209,889.24 = 40,105.60/x
  3. Step 3: Cross multiply
    139,968.28x = 209,889.24 × 40,105.60
  4. Step 4: Simplify right side
    139,968.28x = 8,417,733,903.74
  5. Step 5: Solve for x
    x = 8,417,733,903.74/139,968.28
  6. Step 6: Final answer
    x = 60,140.30

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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.