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Finding the Fourth Proportional to 171,228.80, 257,134.80 and 112,325.60

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Solution

The fourth proportional to 171,228.80, 257,134.80 and 112,325.60 is: 168,679.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,228.80 : 257,134.80 = 112,325.60 : x
  2. Step 2: Convert to fraction form
    171,228.80/257,134.80 = 112,325.60/x
  3. Step 3: Cross multiply
    171,228.80x = 257,134.80 × 112,325.60
  4. Step 4: Simplify right side
    171,228.80x = 28,882,820,690.88
  5. Step 5: Solve for x
    x = 28,882,820,690.88/171,228.80
  6. Step 6: Final answer
    x = 168,679.69

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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.