Home / 135,980.20-187,626.18-79,393.96

Finding the Fourth Proportional to 135,980.20, 187,626.18 and 79,393.96

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Solution

The fourth proportional to 135,980.20, 187,626.18 and 79,393.96 is: 109,548.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,980.20 : 187,626.18 = 79,393.96 : x
  2. Step 2: Convert to fraction form
    135,980.20/187,626.18 = 79,393.96/x
  3. Step 3: Cross multiply
    135,980.20x = 187,626.18 × 79,393.96
  4. Step 4: Simplify right side
    135,980.20x = 14,896,385,429.87
  5. Step 5: Solve for x
    x = 14,896,385,429.87/135,980.20
  6. Step 6: Final answer
    x = 109,548.19

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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.