Home / 135,012.58-186,213.81-81,241.54

Finding the Fourth Proportional to 135,012.58, 186,213.81 and 81,241.54

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Solution

The fourth proportional to 135,012.58, 186,213.81 and 81,241.54 is: 112,051.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,012.58 : 186,213.81 = 81,241.54 : x
  2. Step 2: Convert to fraction form
    135,012.58/186,213.81 = 81,241.54/x
  3. Step 3: Cross multiply
    135,012.58x = 186,213.81 × 81,241.54
  4. Step 4: Simplify right side
    135,012.58x = 15,128,296,693.67
  5. Step 5: Solve for x
    x = 15,128,296,693.67/135,012.58
  6. Step 6: Final answer
    x = 112,051.02

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1.5x scale

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.