Home / 128,732.45-193,072.28-48,742.82

Finding the Fourth Proportional to 128,732.45, 193,072.28 and 48,742.82

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Solution

The fourth proportional to 128,732.45, 193,072.28 and 48,742.82 is: 73,104.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,732.45 : 193,072.28 = 48,742.82 : x
  2. Step 2: Convert to fraction form
    128,732.45/193,072.28 = 48,742.82/x
  3. Step 3: Cross multiply
    128,732.45x = 193,072.28 × 48,742.82
  4. Step 4: Simplify right side
    128,732.45x = 9,410,886,181.95
  5. Step 5: Solve for x
    x = 9,410,886,181.95/128,732.45
  6. Step 6: Final answer
    x = 73,104.23

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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.