Home / 127,811.23-176,392.61-76,840.56

Finding the Fourth Proportional to 127,811.23, 176,392.61 and 76,840.56

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Solution

The fourth proportional to 127,811.23, 176,392.61 and 76,840.56 is: 106,047.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,811.23 : 176,392.61 = 76,840.56 : x
  2. Step 2: Convert to fraction form
    127,811.23/176,392.61 = 76,840.56/x
  3. Step 3: Cross multiply
    127,811.23x = 176,392.61 × 76,840.56
  4. Step 4: Simplify right side
    127,811.23x = 13,554,106,932.26
  5. Step 5: Solve for x
    x = 13,554,106,932.26/127,811.23
  6. Step 6: Final answer
    x = 106,047.86

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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.