Home / 135,620.51-187,157.01-78,262.22

Finding the Fourth Proportional to 135,620.51, 187,157.01 and 78,262.22

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Solution

The fourth proportional to 135,620.51, 187,157.01 and 78,262.22 is: 108,002.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,620.51 : 187,157.01 = 78,262.22 : x
  2. Step 2: Convert to fraction form
    135,620.51/187,157.01 = 78,262.22/x
  3. Step 3: Cross multiply
    135,620.51x = 187,157.01 × 78,262.22
  4. Step 4: Simplify right side
    135,620.51x = 14,647,322,155.38
  5. Step 5: Solve for x
    x = 14,647,322,155.38/135,620.51
  6. Step 6: Final answer
    x = 108,002.27

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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.