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Finding the Fourth Proportional to 171,559.80, 257,496.30 and 87,378.12

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Solution

The fourth proportional to 171,559.80, 257,496.30 and 87,378.12 is: 131,146.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,559.80 : 257,496.30 = 87,378.12 : x
  2. Step 2: Convert to fraction form
    171,559.80/257,496.30 = 87,378.12/x
  3. Step 3: Cross multiply
    171,559.80x = 257,496.30 × 87,378.12
  4. Step 4: Simplify right side
    171,559.80x = 22,499,542,600.96
  5. Step 5: Solve for x
    x = 22,499,542,600.96/171,559.80
  6. Step 6: Final answer
    x = 131,146.94

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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.