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Finding the Fourth Proportional to 146,543.70, 219,815.55 and 67,811.70

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Solution

The fourth proportional to 146,543.70, 219,815.55 and 67,811.70 is: 101,717.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,543.70 : 219,815.55 = 67,811.70 : x
  2. Step 2: Convert to fraction form
    146,543.70/219,815.55 = 67,811.70/x
  3. Step 3: Cross multiply
    146,543.70x = 219,815.55 × 67,811.70
  4. Step 4: Simplify right side
    146,543.70x = 14,906,066,131.94
  5. Step 5: Solve for x
    x = 14,906,066,131.94/146,543.70
  6. Step 6: Final answer
    x = 101,717.55

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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.