Home / 136,808.23-188,761.99-80,208.67

Finding the Fourth Proportional to 136,808.23, 188,761.99 and 80,208.67

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Solution

The fourth proportional to 136,808.23, 188,761.99 and 80,208.67 is: 110,668.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,808.23 : 188,761.99 = 80,208.67 : x
  2. Step 2: Convert to fraction form
    136,808.23/188,761.99 = 80,208.67/x
  3. Step 3: Cross multiply
    136,808.23x = 188,761.99 × 80,208.67
  4. Step 4: Simplify right side
    136,808.23x = 15,140,348,164.45
  5. Step 5: Solve for x
    x = 15,140,348,164.45/136,808.23
  6. Step 6: Final answer
    x = 110,668.40

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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.