Home / 100,083.90-138,096.60-57,062.58

Finding the Fourth Proportional to 100,083.90, 138,096.60 and 57,062.58

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Solution

The fourth proportional to 100,083.90, 138,096.60 and 57,062.58 is: 78,735.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,083.90 : 138,096.60 = 57,062.58 : x
  2. Step 2: Convert to fraction form
    100,083.90/138,096.60 = 57,062.58/x
  3. Step 3: Cross multiply
    100,083.90x = 138,096.60 × 57,062.58
  4. Step 4: Simplify right side
    100,083.90x = 7,880,148,285.23
  5. Step 5: Solve for x
    x = 7,880,148,285.23/100,083.90
  6. Step 6: Final answer
    x = 78,735.42

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1.5x scale

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.