Home / 120,982.80-181,258.20-58,515.60

Finding the Fourth Proportional to 120,982.80, 181,258.20 and 58,515.60

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Solution

The fourth proportional to 120,982.80, 181,258.20 and 58,515.60 is: 87,668.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,982.80 : 181,258.20 = 58,515.60 : x
  2. Step 2: Convert to fraction form
    120,982.80/181,258.20 = 58,515.60/x
  3. Step 3: Cross multiply
    120,982.80x = 181,258.20 × 58,515.60
  4. Step 4: Simplify right side
    120,982.80x = 10,606,432,327.92
  5. Step 5: Solve for x
    x = 10,606,432,327.92/120,982.80
  6. Step 6: Final answer
    x = 87,668.93

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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.