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Finding the Fourth Proportional to 147,405.98, 203,425.90 and 80,337.98

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Solution

The fourth proportional to 147,405.98, 203,425.90 and 80,337.98 is: 110,869.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,405.98 : 203,425.90 = 80,337.98 : x
  2. Step 2: Convert to fraction form
    147,405.98/203,425.90 = 80,337.98/x
  3. Step 3: Cross multiply
    147,405.98x = 203,425.90 × 80,337.98
  4. Step 4: Simplify right side
    147,405.98x = 16,342,825,885.68
  5. Step 5: Solve for x
    x = 16,342,825,885.68/147,405.98
  6. Step 6: Final answer
    x = 110,869.49

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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.