Home / 128,206.52-175,983.31-113,743.16

Finding the Fourth Proportional to 128,206.52, 175,983.31 and 113,743.16

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Solution

The fourth proportional to 128,206.52, 175,983.31 and 113,743.16 is: 156,130.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,206.52 : 175,983.31 = 113,743.16 : x
  2. Step 2: Convert to fraction form
    128,206.52/175,983.31 = 113,743.16/x
  3. Step 3: Cross multiply
    128,206.52x = 175,983.31 × 113,743.16
  4. Step 4: Simplify right side
    128,206.52x = 20,016,897,786.66
  5. Step 5: Solve for x
    x = 20,016,897,786.66/128,206.52
  6. Step 6: Final answer
    x = 156,130.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.