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Finding the Fourth Proportional to 119,914.66, 179,881.53 and 69,999.80

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Solution

The fourth proportional to 119,914.66, 179,881.53 and 69,999.80 is: 105,005.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,914.66 : 179,881.53 = 69,999.80 : x
  2. Step 2: Convert to fraction form
    119,914.66/179,881.53 = 69,999.80/x
  3. Step 3: Cross multiply
    119,914.66x = 179,881.53 × 69,999.80
  4. Step 4: Simplify right side
    119,914.66x = 12,591,669,961.79
  5. Step 5: Solve for x
    x = 12,591,669,961.79/119,914.66
  6. Step 6: Final answer
    x = 105,005.26

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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.