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Finding the Fourth Proportional to 121,125.92, 181,688.94 and 54,488.21

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Solution

The fourth proportional to 121,125.92, 181,688.94 and 54,488.21 is: 81,732.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,125.92 : 181,688.94 = 54,488.21 : x
  2. Step 2: Convert to fraction form
    121,125.92/181,688.94 = 54,488.21/x
  3. Step 3: Cross multiply
    121,125.92x = 181,688.94 × 54,488.21
  4. Step 4: Simplify right side
    121,125.92x = 9,899,905,571.62
  5. Step 5: Solve for x
    x = 9,899,905,571.62/121,125.92
  6. Step 6: Final answer
    x = 81,732.34

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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.