Home / 140,062.86-193,282.38-79,640.10

Finding the Fourth Proportional to 140,062.86, 193,282.38 and 79,640.10

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Solution

The fourth proportional to 140,062.86, 193,282.38 and 79,640.10 is: 109,900.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,062.86 : 193,282.38 = 79,640.10 : x
  2. Step 2: Convert to fraction form
    140,062.86/193,282.38 = 79,640.10/x
  3. Step 3: Cross multiply
    140,062.86x = 193,282.38 × 79,640.10
  4. Step 4: Simplify right side
    140,062.86x = 15,393,028,071.44
  5. Step 5: Solve for x
    x = 15,393,028,071.44/140,062.86
  6. Step 6: Final answer
    x = 109,900.86

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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.