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Finding the Fourth Proportional to 169,912.20, 254,649.60 and 103,281.60

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Solution

The fourth proportional to 169,912.20, 254,649.60 and 103,281.60 is: 154,789.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,912.20 : 254,649.60 = 103,281.60 : x
  2. Step 2: Convert to fraction form
    169,912.20/254,649.60 = 103,281.60/x
  3. Step 3: Cross multiply
    169,912.20x = 254,649.60 × 103,281.60
  4. Step 4: Simplify right side
    169,912.20x = 26,300,618,127.36
  5. Step 5: Solve for x
    x = 26,300,618,127.36/169,912.20
  6. Step 6: Final answer
    x = 154,789.46

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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.