Home / 135,439.38-201,729.03-128,326.80

Finding the Fourth Proportional to 135,439.38, 201,729.03 and 128,326.80

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Solution

The fourth proportional to 135,439.38, 201,729.03 and 128,326.80 is: 191,135.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,439.38 : 201,729.03 = 128,326.80 : x
  2. Step 2: Convert to fraction form
    135,439.38/201,729.03 = 128,326.80/x
  3. Step 3: Cross multiply
    135,439.38x = 201,729.03 × 128,326.80
  4. Step 4: Simplify right side
    135,439.38x = 25,887,240,887.00
  5. Step 5: Solve for x
    x = 25,887,240,887.00/135,439.38
  6. Step 6: Final answer
    x = 191,135.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.