Home / 123,979.16-171,090.22-67,390.36

Finding the Fourth Proportional to 123,979.16, 171,090.22 and 67,390.36

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Solution

The fourth proportional to 123,979.16, 171,090.22 and 67,390.36 is: 92,998.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,979.16 : 171,090.22 = 67,390.36 : x
  2. Step 2: Convert to fraction form
    123,979.16/171,090.22 = 67,390.36/x
  3. Step 3: Cross multiply
    123,979.16x = 171,090.22 × 67,390.36
  4. Step 4: Simplify right side
    123,979.16x = 11,529,831,518.28
  5. Step 5: Solve for x
    x = 11,529,831,518.28/123,979.16
  6. Step 6: Final answer
    x = 92,998.14

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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.