Home / 115,892.20-173,838.30-100,685.80

Finding the Fourth Proportional to 115,892.20, 173,838.30 and 100,685.80

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Solution

The fourth proportional to 115,892.20, 173,838.30 and 100,685.80 is: 151,028.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,892.20 : 173,838.30 = 100,685.80 : x
  2. Step 2: Convert to fraction form
    115,892.20/173,838.30 = 100,685.80/x
  3. Step 3: Cross multiply
    115,892.20x = 173,838.30 × 100,685.80
  4. Step 4: Simplify right side
    115,892.20x = 17,503,048,306.14
  5. Step 5: Solve for x
    x = 17,503,048,306.14/115,892.20
  6. Step 6: Final answer
    x = 151,028.70

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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.