Home / 103,145.24-154,725.78-43,981.22

Finding the Fourth Proportional to 103,145.24, 154,725.78 and 43,981.22

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Solution

The fourth proportional to 103,145.24, 154,725.78 and 43,981.22 is: 65,975.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,145.24 : 154,725.78 = 43,981.22 : x
  2. Step 2: Convert to fraction form
    103,145.24/154,725.78 = 43,981.22/x
  3. Step 3: Cross multiply
    103,145.24x = 154,725.78 × 43,981.22
  4. Step 4: Simplify right side
    103,145.24x = 6,805,028,569.85
  5. Step 5: Solve for x
    x = 6,805,028,569.85/103,145.24
  6. Step 6: Final answer
    x = 65,975.21

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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.