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Finding the Fourth Proportional to 171,340.36, 256,729.65 and 121,330.66

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Solution

The fourth proportional to 171,340.36, 256,729.65 and 121,330.66 is: 181,797.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,340.36 : 256,729.65 = 121,330.66 : x
  2. Step 2: Convert to fraction form
    171,340.36/256,729.65 = 121,330.66/x
  3. Step 3: Cross multiply
    171,340.36x = 256,729.65 × 121,330.66
  4. Step 4: Simplify right side
    171,340.36x = 31,149,177,943.11
  5. Step 5: Solve for x
    x = 31,149,177,943.11/171,340.36
  6. Step 6: Final answer
    x = 181,797.08

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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.