Home / 123,388.20-185,168.70-53,317.80

Finding the Fourth Proportional to 123,388.20, 185,168.70 and 53,317.80

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Solution

The fourth proportional to 123,388.20, 185,168.70 and 53,317.80 is: 80,014.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,388.20 : 185,168.70 = 53,317.80 : x
  2. Step 2: Convert to fraction form
    123,388.20/185,168.70 = 53,317.80/x
  3. Step 3: Cross multiply
    123,388.20x = 185,168.70 × 53,317.80
  4. Step 4: Simplify right side
    123,388.20x = 9,872,787,712.86
  5. Step 5: Solve for x
    x = 9,872,787,712.86/123,388.20
  6. Step 6: Final answer
    x = 80,014.03

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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.