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Finding the Fourth Proportional to 147,878.61, 204,072.33 and 80,810.61

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Solution

The fourth proportional to 147,878.61, 204,072.33 and 80,810.61 is: 111,518.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,878.61 : 204,072.33 = 80,810.61 : x
  2. Step 2: Convert to fraction form
    147,878.61/204,072.33 = 80,810.61/x
  3. Step 3: Cross multiply
    147,878.61x = 204,072.33 × 80,810.61
  4. Step 4: Simplify right side
    147,878.61x = 16,491,209,471.42
  5. Step 5: Solve for x
    x = 16,491,209,471.42/147,878.61
  6. Step 6: Final answer
    x = 111,518.56

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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.