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Finding the Fourth Proportional to 168,995.70, 253,573.74 and 84,763.40

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Solution

The fourth proportional to 168,995.70, 253,573.74 and 84,763.40 is: 127,185.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,995.70 : 253,573.74 = 84,763.40 : x
  2. Step 2: Convert to fraction form
    168,995.70/253,573.74 = 84,763.40/x
  3. Step 3: Cross multiply
    168,995.70x = 253,573.74 × 84,763.40
  4. Step 4: Simplify right side
    168,995.70x = 21,493,771,085.25
  5. Step 5: Solve for x
    x = 21,493,771,085.25/168,995.70
  6. Step 6: Final answer
    x = 127,185.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.