Home / 135,805.42-187,411.26-75,376.78

Finding the Fourth Proportional to 135,805.42, 187,411.26 and 75,376.78

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Solution

The fourth proportional to 135,805.42, 187,411.26 and 75,376.78 is: 104,019.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,805.42 : 187,411.26 = 75,376.78 : x
  2. Step 2: Convert to fraction form
    135,805.42/187,411.26 = 75,376.78/x
  3. Step 3: Cross multiply
    135,805.42x = 187,411.26 × 75,376.78
  4. Step 4: Simplify right side
    135,805.42x = 14,126,457,314.54
  5. Step 5: Solve for x
    x = 14,126,457,314.54/135,805.42
  6. Step 6: Final answer
    x = 104,019.83

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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.