Home / 103,769.48-155,654.27-80,111.58

Finding the Fourth Proportional to 103,769.48, 155,654.27 and 80,111.58

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Solution

The fourth proportional to 103,769.48, 155,654.27 and 80,111.58 is: 120,167.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,769.48 : 155,654.27 = 80,111.58 : x
  2. Step 2: Convert to fraction form
    103,769.48/155,654.27 = 80,111.58/x
  3. Step 3: Cross multiply
    103,769.48x = 155,654.27 × 80,111.58
  4. Step 4: Simplify right side
    103,769.48x = 12,469,708,324.62
  5. Step 5: Solve for x
    x = 12,469,708,324.62/103,769.48
  6. Step 6: Final answer
    x = 120,167.40

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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.