Home / 118,940.10-164,144.93-78,583.07

Finding the Fourth Proportional to 118,940.10, 164,144.93 and 78,583.07

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Solution

The fourth proportional to 118,940.10, 164,144.93 and 78,583.07 is: 108,449.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,940.10 : 164,144.93 = 78,583.07 : x
  2. Step 2: Convert to fraction form
    118,940.10/164,144.93 = 78,583.07/x
  3. Step 3: Cross multiply
    118,940.10x = 164,144.93 × 78,583.07
  4. Step 4: Simplify right side
    118,940.10x = 12,899,011,310.70
  5. Step 5: Solve for x
    x = 12,899,011,310.70/118,940.10
  6. Step 6: Final answer
    x = 108,449.64

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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.