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Finding the Fourth Proportional to 170,091.70, 255,137.55 and 151,720.90

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Solution

The fourth proportional to 170,091.70, 255,137.55 and 151,720.90 is: 227,581.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,091.70 : 255,137.55 = 151,720.90 : x
  2. Step 2: Convert to fraction form
    170,091.70/255,137.55 = 151,720.90/x
  3. Step 3: Cross multiply
    170,091.70x = 255,137.55 × 151,720.90
  4. Step 4: Simplify right side
    170,091.70x = 38,709,698,709.80
  5. Step 5: Solve for x
    x = 38,709,698,709.80/170,091.70
  6. Step 6: Final answer
    x = 227,581.35

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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.