Home / 150,431.72-207,604.50-86,772.20

Finding the Fourth Proportional to 150,431.72, 207,604.50 and 86,772.20

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Solution

The fourth proportional to 150,431.72, 207,604.50 and 86,772.20 is: 119,750.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,431.72 : 207,604.50 = 86,772.20 : x
  2. Step 2: Convert to fraction form
    150,431.72/207,604.50 = 86,772.20/x
  3. Step 3: Cross multiply
    150,431.72x = 207,604.50 × 86,772.20
  4. Step 4: Simplify right side
    150,431.72x = 18,014,299,194.90
  5. Step 5: Solve for x
    x = 18,014,299,194.90/150,431.72
  6. Step 6: Final answer
    x = 119,750.67

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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.