Home / 87,431.80-131,147.70-59,438.20

Finding the Fourth Proportional to 87,431.80, 131,147.70 and 59,438.20

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Solution

The fourth proportional to 87,431.80, 131,147.70 and 59,438.20 is: 89,157.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,431.80 : 131,147.70 = 59,438.20 : x
  2. Step 2: Convert to fraction form
    87,431.80/131,147.70 = 59,438.20/x
  3. Step 3: Cross multiply
    87,431.80x = 131,147.70 × 59,438.20
  4. Step 4: Simplify right side
    87,431.80x = 7,795,183,222.14
  5. Step 5: Solve for x
    x = 7,795,183,222.14/87,431.80
  6. Step 6: Final answer
    x = 89,157.30

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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.