Home / 103,428.05-155,160.30-36,906.80

Finding the Fourth Proportional to 103,428.05, 155,160.30 and 36,906.80

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Solution

The fourth proportional to 103,428.05, 155,160.30 and 36,906.80 is: 55,366.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,428.05 : 155,160.30 = 36,906.80 : x
  2. Step 2: Convert to fraction form
    103,428.05/155,160.30 = 36,906.80/x
  3. Step 3: Cross multiply
    103,428.05x = 155,160.30 × 36,906.80
  4. Step 4: Simplify right side
    103,428.05x = 5,726,470,160.04
  5. Step 5: Solve for x
    x = 5,726,470,160.04/103,428.05
  6. Step 6: Final answer
    x = 55,366.70

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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.