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Finding the Fourth Proportional to 157,365.45, 217,164.33 and 85,745.46

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Solution

The fourth proportional to 157,365.45, 217,164.33 and 85,745.46 is: 118,328.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,365.45 : 217,164.33 = 85,745.46 : x
  2. Step 2: Convert to fraction form
    157,365.45/217,164.33 = 85,745.46/x
  3. Step 3: Cross multiply
    157,365.45x = 217,164.33 × 85,745.46
  4. Step 4: Simplify right side
    157,365.45x = 18,620,855,371.44
  5. Step 5: Solve for x
    x = 18,620,855,371.44/157,365.45
  6. Step 6: Final answer
    x = 118,328.74

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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.