Home / 135,564.72-187,074.36-81,844.68

Finding the Fourth Proportional to 135,564.72, 187,074.36 and 81,844.68

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Solution

The fourth proportional to 135,564.72, 187,074.36 and 81,844.68 is: 112,942.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,564.72 : 187,074.36 = 81,844.68 : x
  2. Step 2: Convert to fraction form
    135,564.72/187,074.36 = 81,844.68/x
  3. Step 3: Cross multiply
    135,564.72x = 187,074.36 × 81,844.68
  4. Step 4: Simplify right side
    135,564.72x = 15,311,041,130.40
  5. Step 5: Solve for x
    x = 15,311,041,130.40/135,564.72
  6. Step 6: Final answer
    x = 112,942.67

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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.