Home / 104,719.78-156,986.70-38,147.50

Finding the Fourth Proportional to 104,719.78, 156,986.70 and 38,147.50

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Solution

The fourth proportional to 104,719.78, 156,986.70 and 38,147.50 is: 57,187.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,719.78 : 156,986.70 = 38,147.50 : x
  2. Step 2: Convert to fraction form
    104,719.78/156,986.70 = 38,147.50/x
  3. Step 3: Cross multiply
    104,719.78x = 156,986.70 × 38,147.50
  4. Step 4: Simplify right side
    104,719.78x = 5,988,650,138.25
  5. Step 5: Solve for x
    x = 5,988,650,138.25/104,719.78
  6. Step 6: Final answer
    x = 57,187.38

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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.