Home / 123,909.08-170,992.42-67,320.05

Finding the Fourth Proportional to 123,909.08, 170,992.42 and 67,320.05

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Solution

The fourth proportional to 123,909.08, 170,992.42 and 67,320.05 is: 92,900.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,909.08 : 170,992.42 = 67,320.05 : x
  2. Step 2: Convert to fraction form
    123,909.08/170,992.42 = 67,320.05/x
  3. Step 3: Cross multiply
    123,909.08x = 170,992.42 × 67,320.05
  4. Step 4: Simplify right side
    123,909.08x = 11,511,217,240.76
  5. Step 5: Solve for x
    x = 11,511,217,240.76/123,909.08
  6. Step 6: Final answer
    x = 92,900.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.