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Finding the Fourth Proportional to 127,362.36, 175,760.86 and 79,643.64

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Solution

The fourth proportional to 127,362.36, 175,760.86 and 79,643.64 is: 109,908.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,362.36 : 175,760.86 = 79,643.64 : x
  2. Step 2: Convert to fraction form
    127,362.36/175,760.86 = 79,643.64/x
  3. Step 3: Cross multiply
    127,362.36x = 175,760.86 × 79,643.64
  4. Step 4: Simplify right side
    127,362.36x = 13,998,234,659.93
  5. Step 5: Solve for x
    x = 13,998,234,659.93/127,362.36
  6. Step 6: Final answer
    x = 109,908.73

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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.