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Finding the Fourth Proportional to 157,137.44, 216,845.51 and 85,515.92

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Solution

The fourth proportional to 157,137.44, 216,845.51 and 85,515.92 is: 118,009.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,137.44 : 216,845.51 = 85,515.92 : x
  2. Step 2: Convert to fraction form
    157,137.44/216,845.51 = 85,515.92/x
  3. Step 3: Cross multiply
    157,137.44x = 216,845.51 × 85,515.92
  4. Step 4: Simplify right side
    157,137.44x = 18,543,743,285.52
  5. Step 5: Solve for x
    x = 18,543,743,285.52/157,137.44
  6. Step 6: Final answer
    x = 118,009.71

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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.