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Finding the Fourth Proportional to 147,523.66, 203,582.28 and 80,455.66

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Solution

The fourth proportional to 147,523.66, 203,582.28 and 80,455.66 is: 111,028.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,523.66 : 203,582.28 = 80,455.66 : x
  2. Step 2: Convert to fraction form
    147,523.66/203,582.28 = 80,455.66/x
  3. Step 3: Cross multiply
    147,523.66x = 203,582.28 × 80,455.66
  4. Step 4: Simplify right side
    147,523.66x = 16,379,346,701.70
  5. Step 5: Solve for x
    x = 16,379,346,701.70/147,523.66
  6. Step 6: Final answer
    x = 111,028.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.