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Finding the Fourth Proportional to 146,741.70, 220,112.55 and 68,009.70

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Solution

The fourth proportional to 146,741.70, 220,112.55 and 68,009.70 is: 102,014.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,741.70 : 220,112.55 = 68,009.70 : x
  2. Step 2: Convert to fraction form
    146,741.70/220,112.55 = 68,009.70/x
  3. Step 3: Cross multiply
    146,741.70x = 220,112.55 × 68,009.70
  4. Step 4: Simplify right side
    146,741.70x = 14,969,788,491.74
  5. Step 5: Solve for x
    x = 14,969,788,491.74/146,741.70
  6. Step 6: Final answer
    x = 102,014.55

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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.