Home / 135,581.01-187,106.66-81,855.60

Finding the Fourth Proportional to 135,581.01, 187,106.66 and 81,855.60

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Solution

The fourth proportional to 135,581.01, 187,106.66 and 81,855.60 is: 112,963.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,581.01 : 187,106.66 = 81,855.60 : x
  2. Step 2: Convert to fraction form
    135,581.01/187,106.66 = 81,855.60/x
  3. Step 3: Cross multiply
    135,581.01x = 187,106.66 × 81,855.60
  4. Step 4: Simplify right side
    135,581.01x = 15,315,727,918.30
  5. Step 5: Solve for x
    x = 15,315,727,918.30/135,581.01
  6. Step 6: Final answer
    x = 112,963.67

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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.