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Finding the Fourth Proportional to 157,365.44, 217,164.33 and 85,745.48

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Solution

The fourth proportional to 157,365.44, 217,164.33 and 85,745.48 is: 118,328.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,365.44 : 217,164.33 = 85,745.48 : x
  2. Step 2: Convert to fraction form
    157,365.44/217,164.33 = 85,745.48/x
  3. Step 3: Cross multiply
    157,365.44x = 217,164.33 × 85,745.48
  4. Step 4: Simplify right side
    157,365.44x = 18,620,858,628.91
  5. Step 5: Solve for x
    x = 18,620,858,628.91/157,365.44
  6. Step 6: Final answer
    x = 118,328.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.