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Finding the Fourth Proportional to 121,077.86, 181,614.96 and 54,470.95

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Solution

The fourth proportional to 121,077.86, 181,614.96 and 54,470.95 is: 81,705.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,077.86 : 181,614.96 = 54,470.95 : x
  2. Step 2: Convert to fraction form
    121,077.86/181,614.96 = 54,470.95/x
  3. Step 3: Cross multiply
    121,077.86x = 181,614.96 × 54,470.95
  4. Step 4: Simplify right side
    121,077.86x = 9,892,738,951.37
  5. Step 5: Solve for x
    x = 9,892,738,951.37/121,077.86
  6. Step 6: Final answer
    x = 81,705.60

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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.