Home / 135,601.50-187,130.07-79,012.86

Finding the Fourth Proportional to 135,601.50, 187,130.07 and 79,012.86

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Solution

The fourth proportional to 135,601.50, 187,130.07 and 79,012.86 is: 109,037.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,601.50 : 187,130.07 = 79,012.86 : x
  2. Step 2: Convert to fraction form
    135,601.50/187,130.07 = 79,012.86/x
  3. Step 3: Cross multiply
    135,601.50x = 187,130.07 × 79,012.86
  4. Step 4: Simplify right side
    135,601.50x = 14,785,682,022.70
  5. Step 5: Solve for x
    x = 14,785,682,022.70/135,601.50
  6. Step 6: Final answer
    x = 109,037.75

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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.