Home / 103,681.16-155,604.78-53,775.56

Finding the Fourth Proportional to 103,681.16, 155,604.78 and 53,775.56

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Solution

The fourth proportional to 103,681.16, 155,604.78 and 53,775.56 is: 80,706.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,681.16 : 155,604.78 = 53,775.56 : x
  2. Step 2: Convert to fraction form
    103,681.16/155,604.78 = 53,775.56/x
  3. Step 3: Cross multiply
    103,681.16x = 155,604.78 × 53,775.56
  4. Step 4: Simplify right side
    103,681.16x = 8,367,734,183.18
  5. Step 5: Solve for x
    x = 8,367,734,183.18/103,681.16
  6. Step 6: Final answer
    x = 80,706.41

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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.