Home / 103,438.23-155,154.26-28,562.95

Finding the Fourth Proportional to 103,438.23, 155,154.26 and 28,562.95

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Solution

The fourth proportional to 103,438.23, 155,154.26 and 28,562.95 is: 42,843.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,438.23 : 155,154.26 = 28,562.95 : x
  2. Step 2: Convert to fraction form
    103,438.23/155,154.26 = 28,562.95/x
  3. Step 3: Cross multiply
    103,438.23x = 155,154.26 × 28,562.95
  4. Step 4: Simplify right side
    103,438.23x = 4,431,663,370.67
  5. Step 5: Solve for x
    x = 4,431,663,370.67/103,438.23
  6. Step 6: Final answer
    x = 42,843.57

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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.