Home / 135,525.20-187,019.73-78,166.92

Finding the Fourth Proportional to 135,525.20, 187,019.73 and 78,166.92

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Solution

The fourth proportional to 135,525.20, 187,019.73 and 78,166.92 is: 107,867.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,525.20 : 187,019.73 = 78,166.92 : x
  2. Step 2: Convert to fraction form
    135,525.20/187,019.73 = 78,166.92/x
  3. Step 3: Cross multiply
    135,525.20x = 187,019.73 × 78,166.92
  4. Step 4: Simplify right side
    135,525.20x = 14,618,756,273.33
  5. Step 5: Solve for x
    x = 14,618,756,273.33/135,525.20
  6. Step 6: Final answer
    x = 107,867.44

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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.