Home / 135,183.78-186,567.63-77,825.15

Finding the Fourth Proportional to 135,183.78, 186,567.63 and 77,825.15

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Solution

The fourth proportional to 135,183.78, 186,567.63 and 77,825.15 is: 107,406.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,183.78 : 186,567.63 = 77,825.15 : x
  2. Step 2: Convert to fraction form
    135,183.78/186,567.63 = 77,825.15/x
  3. Step 3: Cross multiply
    135,183.78x = 186,567.63 × 77,825.15
  4. Step 4: Simplify right side
    135,183.78x = 14,519,652,857.06
  5. Step 5: Solve for x
    x = 14,519,652,857.06/135,183.78
  6. Step 6: Final answer
    x = 107,406.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.