Home / 135,644.45-187,191.59-75,217.64

Finding the Fourth Proportional to 135,644.45, 187,191.59 and 75,217.64

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Solution

The fourth proportional to 135,644.45, 187,191.59 and 75,217.64 is: 103,801.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,644.45 : 187,191.59 = 75,217.64 : x
  2. Step 2: Convert to fraction form
    135,644.45/187,191.59 = 75,217.64/x
  3. Step 3: Cross multiply
    135,644.45x = 187,191.59 × 75,217.64
  4. Step 4: Simplify right side
    135,644.45x = 14,080,108,315.60
  5. Step 5: Solve for x
    x = 14,080,108,315.60/135,644.45
  6. Step 6: Final answer
    x = 103,801.58

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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.