Home / 123,385.12-185,074.32-34,639.36

Finding the Fourth Proportional to 123,385.12, 185,074.32 and 34,639.36

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Solution

The fourth proportional to 123,385.12, 185,074.32 and 34,639.36 is: 51,958.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,385.12 : 185,074.32 = 34,639.36 : x
  2. Step 2: Convert to fraction form
    123,385.12/185,074.32 = 34,639.36/x
  3. Step 3: Cross multiply
    123,385.12x = 185,074.32 × 34,639.36
  4. Step 4: Simplify right side
    123,385.12x = 6,410,855,997.24
  5. Step 5: Solve for x
    x = 6,410,855,997.24/123,385.12
  6. Step 6: Final answer
    x = 51,958.10

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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.