Home / 135,494.55-186,989.40-81,778.77

Finding the Fourth Proportional to 135,494.55, 186,989.40 and 81,778.77

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Solution

The fourth proportional to 135,494.55, 186,989.40 and 81,778.77 is: 112,858.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,494.55 : 186,989.40 = 81,778.77 : x
  2. Step 2: Convert to fraction form
    135,494.55/186,989.40 = 81,778.77/x
  3. Step 3: Cross multiply
    135,494.55x = 186,989.40 × 81,778.77
  4. Step 4: Simplify right side
    135,494.55x = 15,291,763,135.04
  5. Step 5: Solve for x
    x = 15,291,763,135.04/135,494.55
  6. Step 6: Final answer
    x = 112,858.88

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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.