Home / 199,390.36-275,089.78-127,809.88

Finding the Fourth Proportional to 199,390.36, 275,089.78 and 127,809.88

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Solution

The fourth proportional to 199,390.36, 275,089.78 and 127,809.88 is: 176,333.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,390.36 : 275,089.78 = 127,809.88 : x
  2. Step 2: Convert to fraction form
    199,390.36/275,089.78 = 127,809.88/x
  3. Step 3: Cross multiply
    199,390.36x = 275,089.78 × 127,809.88
  4. Step 4: Simplify right side
    199,390.36x = 35,159,191,771.03
  5. Step 5: Solve for x
    x = 35,159,191,771.03/199,390.36
  6. Step 6: Final answer
    x = 176,333.46

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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.