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Finding the Fourth Proportional to 147,081.69, 220,644.41 and 68,203.89

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Solution

The fourth proportional to 147,081.69, 220,644.41 and 68,203.89 is: 102,315.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,081.69 : 220,644.41 = 68,203.89 : x
  2. Step 2: Convert to fraction form
    147,081.69/220,644.41 = 68,203.89/x
  3. Step 3: Cross multiply
    147,081.69x = 220,644.41 × 68,203.89
  4. Step 4: Simplify right side
    147,081.69x = 15,048,806,727.74
  5. Step 5: Solve for x
    x = 15,048,806,727.74/147,081.69
  6. Step 6: Final answer
    x = 102,315.98

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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.