Home / 135,828.18-187,434-75,395.88

Finding the Fourth Proportional to 135,828.18, 187,434 and 75,395.88

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Solution

The fourth proportional to 135,828.18, 187,434 and 75,395.88 is: 104,041.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,828.18 : 187,434 = 75,395.88 : x
  2. Step 2: Convert to fraction form
    135,828.18/187,434 = 75,395.88/x
  3. Step 3: Cross multiply
    135,828.18x = 187,434 × 75,395.88
  4. Step 4: Simplify right side
    135,828.18x = 14,131,751,371.92
  5. Step 5: Solve for x
    x = 14,131,751,371.92/135,828.18
  6. Step 6: Final answer
    x = 104,041.38

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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.