Home / 103,719.24-155,588.49-80,371.80

Finding the Fourth Proportional to 103,719.24, 155,588.49 and 80,371.80

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Solution

The fourth proportional to 103,719.24, 155,588.49 and 80,371.80 is: 120,565.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,719.24 : 155,588.49 = 80,371.80 : x
  2. Step 2: Convert to fraction form
    103,719.24/155,588.49 = 80,371.80/x
  3. Step 3: Cross multiply
    103,719.24x = 155,588.49 × 80,371.80
  4. Step 4: Simplify right side
    103,719.24x = 12,504,927,000.58
  5. Step 5: Solve for x
    x = 12,504,927,000.58/103,719.24
  6. Step 6: Final answer
    x = 120,565.16

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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.