Home / 121,382.70-181,976.85-51,204.30

Finding the Fourth Proportional to 121,382.70, 181,976.85 and 51,204.30

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Solution

The fourth proportional to 121,382.70, 181,976.85 and 51,204.30 is: 76,765.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,382.70 : 181,976.85 = 51,204.30 : x
  2. Step 2: Convert to fraction form
    121,382.70/181,976.85 = 51,204.30/x
  3. Step 3: Cross multiply
    121,382.70x = 181,976.85 × 51,204.30
  4. Step 4: Simplify right side
    121,382.70x = 9,317,997,220.46
  5. Step 5: Solve for x
    x = 9,317,997,220.46/121,382.70
  6. Step 6: Final answer
    x = 76,765.45

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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.