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Finding the Fourth Proportional to 123,489.58, 185,037.54 and 79,079.80

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Solution

The fourth proportional to 123,489.58, 185,037.54 and 79,079.80 is: 118,493.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,489.58 : 185,037.54 = 79,079.80 : x
  2. Step 2: Convert to fraction form
    123,489.58/185,037.54 = 79,079.80/x
  3. Step 3: Cross multiply
    123,489.58x = 185,037.54 × 79,079.80
  4. Step 4: Simplify right side
    123,489.58x = 14,632,731,655.69
  5. Step 5: Solve for x
    x = 14,632,731,655.69/123,489.58
  6. Step 6: Final answer
    x = 118,493.65

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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.