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Finding the Fourth Proportional to 123,392.77, 185,098.77 and 39,157.73

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Solution

The fourth proportional to 123,392.77, 185,098.77 and 39,157.73 is: 58,739.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,392.77 : 185,098.77 = 39,157.73 : x
  2. Step 2: Convert to fraction form
    123,392.77/185,098.77 = 39,157.73/x
  3. Step 3: Cross multiply
    123,392.77x = 185,098.77 × 39,157.73
  4. Step 4: Simplify right side
    123,392.77x = 7,248,047,427.62
  5. Step 5: Solve for x
    x = 7,248,047,427.62/123,392.77
  6. Step 6: Final answer
    x = 58,739.65

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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.