Home / 103,628.35-155,672.93-100,863.55

Finding the Fourth Proportional to 103,628.35, 155,672.93 and 100,863.55

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Solution

The fourth proportional to 103,628.35, 155,672.93 and 100,863.55 is: 151,519.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,628.35 : 155,672.93 = 100,863.55 : x
  2. Step 2: Convert to fraction form
    103,628.35/155,672.93 = 100,863.55/x
  3. Step 3: Cross multiply
    103,628.35x = 155,672.93 × 100,863.55
  4. Step 4: Simplify right side
    103,628.35x = 15,701,723,854.38
  5. Step 5: Solve for x
    x = 15,701,723,854.38/103,628.35
  6. Step 6: Final answer
    x = 151,519.58

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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.