Home / 128,918.37-193,387.28-83,837.01

Finding the Fourth Proportional to 128,918.37, 193,387.28 and 83,837.01

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Solution

The fourth proportional to 128,918.37, 193,387.28 and 83,837.01 is: 125,761.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,918.37 : 193,387.28 = 83,837.01 : x
  2. Step 2: Convert to fraction form
    128,918.37/193,387.28 = 83,837.01/x
  3. Step 3: Cross multiply
    128,918.37x = 193,387.28 × 83,837.01
  4. Step 4: Simplify right side
    128,918.37x = 16,213,010,908.05
  5. Step 5: Solve for x
    x = 16,213,010,908.05/128,918.37
  6. Step 6: Final answer
    x = 125,761.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.