Home / 135,540.03-187,050.06-81,814.56

Finding the Fourth Proportional to 135,540.03, 187,050.06 and 81,814.56

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Solution

The fourth proportional to 135,540.03, 187,050.06 and 81,814.56 is: 112,906.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,540.03 : 187,050.06 = 81,814.56 : x
  2. Step 2: Convert to fraction form
    135,540.03/187,050.06 = 81,814.56/x
  3. Step 3: Cross multiply
    135,540.03x = 187,050.06 × 81,814.56
  4. Step 4: Simplify right side
    135,540.03x = 15,303,417,655.44
  5. Step 5: Solve for x
    x = 15,303,417,655.44/135,540.03
  6. Step 6: Final answer
    x = 112,906.99

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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.