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Finding the Fourth Proportional to 127,296, 175,712.76 and 76,995.36

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Solution

The fourth proportional to 127,296, 175,712.76 and 76,995.36 is: 106,280.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,296 : 175,712.76 = 76,995.36 : x
  2. Step 2: Convert to fraction form
    127,296/175,712.76 = 76,995.36/x
  3. Step 3: Cross multiply
    127,296x = 175,712.76 × 76,995.36
  4. Step 4: Simplify right side
    127,296x = 13,529,067,212.79
  5. Step 5: Solve for x
    x = 13,529,067,212.79/127,296
  6. Step 6: Final answer
    x = 106,280.38

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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.