Home / 120,371.06-180,489.06-82,463.15

Finding the Fourth Proportional to 120,371.06, 180,489.06 and 82,463.15

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Solution

The fourth proportional to 120,371.06, 180,489.06 and 82,463.15 is: 123,648.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,371.06 : 180,489.06 = 82,463.15 : x
  2. Step 2: Convert to fraction form
    120,371.06/180,489.06 = 82,463.15/x
  3. Step 3: Cross multiply
    120,371.06x = 180,489.06 × 82,463.15
  4. Step 4: Simplify right side
    120,371.06x = 14,883,696,879.36
  5. Step 5: Solve for x
    x = 14,883,696,879.36/120,371.06
  6. Step 6: Final answer
    x = 123,648.46

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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.