Home / 118,930.10-164,131.13-78,573.07

Finding the Fourth Proportional to 118,930.10, 164,131.13 and 78,573.07

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Solution

The fourth proportional to 118,930.10, 164,131.13 and 78,573.07 is: 108,435.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,930.10 : 164,131.13 = 78,573.07 : x
  2. Step 2: Convert to fraction form
    118,930.10/164,131.13 = 78,573.07/x
  3. Step 3: Cross multiply
    118,930.10x = 164,131.13 × 78,573.07
  4. Step 4: Simplify right side
    118,930.10x = 12,896,285,553.15
  5. Step 5: Solve for x
    x = 12,896,285,553.15/118,930.10
  6. Step 6: Final answer
    x = 108,435.84

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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.