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Finding the Fourth Proportional to 147,800.95, 203,965.30 and 79,817.92

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Solution

The fourth proportional to 147,800.95, 203,965.30 and 79,817.92 is: 110,148.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,800.95 : 203,965.30 = 79,817.92 : x
  2. Step 2: Convert to fraction form
    147,800.95/203,965.30 = 79,817.92/x
  3. Step 3: Cross multiply
    147,800.95x = 203,965.30 × 79,817.92
  4. Step 4: Simplify right side
    147,800.95x = 16,280,086,286.36
  5. Step 5: Solve for x
    x = 16,280,086,286.36/147,800.95
  6. Step 6: Final answer
    x = 110,148.73

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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.