Home / 123,979.01-171,090.23-67,390.38

Finding the Fourth Proportional to 123,979.01, 171,090.23 and 67,390.38

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Solution

The fourth proportional to 123,979.01, 171,090.23 and 67,390.38 is: 92,998.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,979.01 : 171,090.23 = 67,390.38 : x
  2. Step 2: Convert to fraction form
    123,979.01/171,090.23 = 67,390.38/x
  3. Step 3: Cross multiply
    123,979.01x = 171,090.23 × 67,390.38
  4. Step 4: Simplify right side
    123,979.01x = 11,529,835,277.04
  5. Step 5: Solve for x
    x = 11,529,835,277.04/123,979.01
  6. Step 6: Final answer
    x = 92,998.29

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1.5x scale

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.