Home / 135,845.79-187,489.53-79,257.03

Finding the Fourth Proportional to 135,845.79, 187,489.53 and 79,257.03

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Solution

The fourth proportional to 135,845.79, 187,489.53 and 79,257.03 is: 109,387.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,845.79 : 187,489.53 = 79,257.03 : x
  2. Step 2: Convert to fraction form
    135,845.79/187,489.53 = 79,257.03/x
  3. Step 3: Cross multiply
    135,845.79x = 187,489.53 × 79,257.03
  4. Step 4: Simplify right side
    135,845.79x = 14,859,863,303.90
  5. Step 5: Solve for x
    x = 14,859,863,303.90/135,845.79
  6. Step 6: Final answer
    x = 109,387.74

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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.