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Finding the Fourth Proportional to 103,633.70, 155,453.86 and 28,754.60

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Solution

The fourth proportional to 103,633.70, 155,453.86 and 28,754.60 is: 43,132.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,633.70 : 155,453.86 = 28,754.60 : x
  2. Step 2: Convert to fraction form
    103,633.70/155,453.86 = 28,754.60/x
  3. Step 3: Cross multiply
    103,633.70x = 155,453.86 × 28,754.60
  4. Step 4: Simplify right side
    103,633.70x = 4,470,013,562.76
  5. Step 5: Solve for x
    x = 4,470,013,562.76/103,633.70
  6. Step 6: Final answer
    x = 43,132.82

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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.