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Finding the Fourth Proportional to 147,710.61, 203,839.61 and 80,642.61

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Solution

The fourth proportional to 147,710.61, 203,839.61 and 80,642.61 is: 111,286.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,710.61 : 203,839.61 = 80,642.61 : x
  2. Step 2: Convert to fraction form
    147,710.61/203,839.61 = 80,642.61/x
  3. Step 3: Cross multiply
    147,710.61x = 203,839.61 × 80,642.61
  4. Step 4: Simplify right side
    147,710.61x = 16,438,157,768.57
  5. Step 5: Solve for x
    x = 16,438,157,768.57/147,710.61
  6. Step 6: Final answer
    x = 111,286.24

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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.