Home / 104,100.48-155,787.84-85,161.60

Finding the Fourth Proportional to 104,100.48, 155,787.84 and 85,161.60

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Solution

The fourth proportional to 104,100.48, 155,787.84 and 85,161.60 is: 127,445.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,100.48 : 155,787.84 = 85,161.60 : x
  2. Step 2: Convert to fraction form
    104,100.48/155,787.84 = 85,161.60/x
  3. Step 3: Cross multiply
    104,100.48x = 155,787.84 × 85,161.60
  4. Step 4: Simplify right side
    104,100.48x = 13,267,141,714.94
  5. Step 5: Solve for x
    x = 13,267,141,714.94/104,100.48
  6. Step 6: Final answer
    x = 127,445.54

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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.