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Finding the Fourth Proportional to 103,520.34, 155,163.90 and 50,966.76

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Solution

The fourth proportional to 103,520.34, 155,163.90 and 50,966.76 is: 76,392.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,520.34 : 155,163.90 = 50,966.76 : x
  2. Step 2: Convert to fraction form
    103,520.34/155,163.90 = 50,966.76/x
  3. Step 3: Cross multiply
    103,520.34x = 155,163.90 × 50,966.76
  4. Step 4: Simplify right side
    103,520.34x = 7,908,201,251.96
  5. Step 5: Solve for x
    x = 7,908,201,251.96/103,520.34
  6. Step 6: Final answer
    x = 76,392.73

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1.5x scale

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.