Home / 100,756.20-151,142.76-30,636.12

Finding the Fourth Proportional to 100,756.20, 151,142.76 and 30,636.12

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Solution

The fourth proportional to 100,756.20, 151,142.76 and 30,636.12 is: 45,956.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,756.20 : 151,142.76 = 30,636.12 : x
  2. Step 2: Convert to fraction form
    100,756.20/151,142.76 = 30,636.12/x
  3. Step 3: Cross multiply
    100,756.20x = 151,142.76 × 30,636.12
  4. Step 4: Simplify right side
    100,756.20x = 4,630,427,732.49
  5. Step 5: Solve for x
    x = 4,630,427,732.49/100,756.20
  6. Step 6: Final answer
    x = 45,956.75

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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.