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Finding the Fourth Proportional to 147,703.61, 203,829.94 and 80,635.61

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Solution

The fourth proportional to 147,703.61, 203,829.94 and 80,635.61 is: 111,276.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,703.61 : 203,829.94 = 80,635.61 : x
  2. Step 2: Convert to fraction form
    147,703.61/203,829.94 = 80,635.61/x
  3. Step 3: Cross multiply
    147,703.61x = 203,829.94 × 80,635.61
  4. Step 4: Simplify right side
    147,703.61x = 16,435,951,548.16
  5. Step 5: Solve for x
    x = 16,435,951,548.16/147,703.61
  6. Step 6: Final answer
    x = 111,276.57

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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.