Home / 150,309.21-207,419.31-82,326.49

Finding the Fourth Proportional to 150,309.21, 207,419.31 and 82,326.49

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Solution

The fourth proportional to 150,309.21, 207,419.31 and 82,326.49 is: 113,606.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,309.21 : 207,419.31 = 82,326.49 : x
  2. Step 2: Convert to fraction form
    150,309.21/207,419.31 = 82,326.49/x
  3. Step 3: Cross multiply
    150,309.21x = 207,419.31 × 82,326.49
  4. Step 4: Simplify right side
    150,309.21x = 17,076,103,750.52
  5. Step 5: Solve for x
    x = 17,076,103,750.52/150,309.21
  6. Step 6: Final answer
    x = 113,606.50

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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.