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Finding the Fourth Proportional to 170,720.60, 256,226.70 and 76,096.40

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Solution

The fourth proportional to 170,720.60, 256,226.70 and 76,096.40 is: 114,209.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,720.60 : 256,226.70 = 76,096.40 : x
  2. Step 2: Convert to fraction form
    170,720.60/256,226.70 = 76,096.40/x
  3. Step 3: Cross multiply
    170,720.60x = 256,226.70 × 76,096.40
  4. Step 4: Simplify right side
    170,720.60x = 19,497,929,453.88
  5. Step 5: Solve for x
    x = 19,497,929,453.88/170,720.60
  6. Step 6: Final answer
    x = 114,209.59

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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.