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Finding the Fourth Proportional to 120,973.92, 181,326.42 and 91,295.52

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Solution

The fourth proportional to 120,973.92, 181,326.42 and 91,295.52 is: 136,841.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,973.92 : 181,326.42 = 91,295.52 : x
  2. Step 2: Convert to fraction form
    120,973.92/181,326.42 = 91,295.52/x
  3. Step 3: Cross multiply
    120,973.92x = 181,326.42 × 91,295.52
  4. Step 4: Simplify right side
    120,973.92x = 16,554,289,803.64
  5. Step 5: Solve for x
    x = 16,554,289,803.64/120,973.92
  6. Step 6: Final answer
    x = 136,841.81

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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.