Home / 135,804.42-187,409.88-75,375.78

Finding the Fourth Proportional to 135,804.42, 187,409.88 and 75,375.78

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Solution

The fourth proportional to 135,804.42, 187,409.88 and 75,375.78 is: 104,018.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,804.42 : 187,409.88 = 75,375.78 : x
  2. Step 2: Convert to fraction form
    135,804.42/187,409.88 = 75,375.78/x
  3. Step 3: Cross multiply
    135,804.42x = 187,409.88 × 75,375.78
  4. Step 4: Simplify right side
    135,804.42x = 14,126,165,884.71
  5. Step 5: Solve for x
    x = 14,126,165,884.71/135,804.42
  6. Step 6: Final answer
    x = 104,018.45

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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.