Home / 103,653.12-155,464.17-28,765.38

Finding the Fourth Proportional to 103,653.12, 155,464.17 and 28,765.38

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Solution

The fourth proportional to 103,653.12, 155,464.17 and 28,765.38 is: 43,143.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,653.12 : 155,464.17 = 28,765.38 : x
  2. Step 2: Convert to fraction form
    103,653.12/155,464.17 = 28,765.38/x
  3. Step 3: Cross multiply
    103,653.12x = 155,464.17 × 28,765.38
  4. Step 4: Simplify right side
    103,653.12x = 4,471,985,926.43
  5. Step 5: Solve for x
    x = 4,471,985,926.43/103,653.12
  6. Step 6: Final answer
    x = 43,143.77

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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.