Home / 123,607.72-170,530.41-80,637.73

Finding the Fourth Proportional to 123,607.72, 170,530.41 and 80,637.73

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Solution

The fourth proportional to 123,607.72, 170,530.41 and 80,637.73 is: 111,248.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,607.72 : 170,530.41 = 80,637.73 : x
  2. Step 2: Convert to fraction form
    123,607.72/170,530.41 = 80,637.73/x
  3. Step 3: Cross multiply
    123,607.72x = 170,530.41 × 80,637.73
  4. Step 4: Simplify right side
    123,607.72x = 13,751,185,034.43
  5. Step 5: Solve for x
    x = 13,751,185,034.43/123,607.72
  6. Step 6: Final answer
    x = 111,248.59

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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.