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Finding the Fourth Proportional to 123,616, 185,415.36 and 64,485.04

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Solution

The fourth proportional to 123,616, 185,415.36 and 64,485.04 is: 96,723.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,616 : 185,415.36 = 64,485.04 : x
  2. Step 2: Convert to fraction form
    123,616/185,415.36 = 64,485.04/x
  3. Step 3: Cross multiply
    123,616x = 185,415.36 × 64,485.04
  4. Step 4: Simplify right side
    123,616x = 11,956,516,906.21
  5. Step 5: Solve for x
    x = 11,956,516,906.21/123,616
  6. Step 6: Final answer
    x = 96,723.05

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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.