Home / 113,865.68-156,786.80-103,185.84

Finding the Fourth Proportional to 113,865.68, 156,786.80 and 103,185.84

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Solution

The fourth proportional to 113,865.68, 156,786.80 and 103,185.84 is: 142,081.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,865.68 : 156,786.80 = 103,185.84 : x
  2. Step 2: Convert to fraction form
    113,865.68/156,786.80 = 103,185.84/x
  3. Step 3: Cross multiply
    113,865.68x = 156,786.80 × 103,185.84
  4. Step 4: Simplify right side
    113,865.68x = 16,178,177,658.91
  5. Step 5: Solve for x
    x = 16,178,177,658.91/113,865.68
  6. Step 6: Final answer
    x = 142,081.25

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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.