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Finding the Fourth Proportional to 135,425.04, 202,729.32 and 72,906

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Solution

The fourth proportional to 135,425.04, 202,729.32 and 72,906 is: 109,139.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,425.04 : 202,729.32 = 72,906 : x
  2. Step 2: Convert to fraction form
    135,425.04/202,729.32 = 72,906/x
  3. Step 3: Cross multiply
    135,425.04x = 202,729.32 × 72,906
  4. Step 4: Simplify right side
    135,425.04x = 14,780,183,803.92
  5. Step 5: Solve for x
    x = 14,780,183,803.92/135,425.04
  6. Step 6: Final answer
    x = 109,139.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.