Home / 201,080.11-277,421.09-128,525.42

Finding the Fourth Proportional to 201,080.11, 277,421.09 and 128,525.42

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Solution

The fourth proportional to 201,080.11, 277,421.09 and 128,525.42 is: 177,320.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,080.11 : 277,421.09 = 128,525.42 : x
  2. Step 2: Convert to fraction form
    201,080.11/277,421.09 = 128,525.42/x
  3. Step 3: Cross multiply
    201,080.11x = 277,421.09 × 128,525.42
  4. Step 4: Simplify right side
    201,080.11x = 35,655,662,109.11
  5. Step 5: Solve for x
    x = 35,655,662,109.11/201,080.11
  6. Step 6: Final answer
    x = 177,320.68

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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.