Home / 103,981.56-155,972.37-29,112.74

Finding the Fourth Proportional to 103,981.56, 155,972.37 and 29,112.74

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Solution

The fourth proportional to 103,981.56, 155,972.37 and 29,112.74 is: 43,669.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,981.56 : 155,972.37 = 29,112.74 : x
  2. Step 2: Convert to fraction form
    103,981.56/155,972.37 = 29,112.74/x
  3. Step 3: Cross multiply
    103,981.56x = 155,972.37 × 29,112.74
  4. Step 4: Simplify right side
    103,981.56x = 4,540,783,054.99
  5. Step 5: Solve for x
    x = 4,540,783,054.99/103,981.56
  6. Step 6: Final answer
    x = 43,669.12

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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.