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Finding the Fourth Proportional to 171,342.36, 256,732.64 and 121,332.66

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Solution

The fourth proportional to 171,342.36, 256,732.64 and 121,332.66 is: 181,800.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,342.36 : 256,732.64 = 121,332.66 : x
  2. Step 2: Convert to fraction form
    171,342.36/256,732.64 = 121,332.66/x
  3. Step 3: Cross multiply
    171,342.36x = 256,732.64 × 121,332.66
  4. Step 4: Simplify right side
    171,342.36x = 31,150,054,120.02
  5. Step 5: Solve for x
    x = 31,150,054,120.02/171,342.36
  6. Step 6: Final answer
    x = 181,800.08

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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.