Home / 124,724.96-172,120.56-68,137.28

Finding the Fourth Proportional to 124,724.96, 172,120.56 and 68,137.28

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Solution

The fourth proportional to 124,724.96, 172,120.56 and 68,137.28 is: 94,029.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,724.96 : 172,120.56 = 68,137.28 : x
  2. Step 2: Convert to fraction form
    124,724.96/172,120.56 = 68,137.28/x
  3. Step 3: Cross multiply
    124,724.96x = 172,120.56 × 68,137.28
  4. Step 4: Simplify right side
    124,724.96x = 11,727,826,790.48
  5. Step 5: Solve for x
    x = 11,727,826,790.48/124,724.96
  6. Step 6: Final answer
    x = 94,029.51

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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.