Home / 124,709.76-172,100.38-68,121.12

Finding the Fourth Proportional to 124,709.76, 172,100.38 and 68,121.12

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Solution

The fourth proportional to 124,709.76, 172,100.38 and 68,121.12 is: 94,007.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,709.76 : 172,100.38 = 68,121.12 : x
  2. Step 2: Convert to fraction form
    124,709.76/172,100.38 = 68,121.12/x
  3. Step 3: Cross multiply
    124,709.76x = 172,100.38 × 68,121.12
  4. Step 4: Simplify right side
    124,709.76x = 11,723,670,638.03
  5. Step 5: Solve for x
    x = 11,723,670,638.03/124,709.76
  6. Step 6: Final answer
    x = 94,007.64

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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.