Home / 140,337.78-193,659.09-76,663.86

Finding the Fourth Proportional to 140,337.78, 193,659.09 and 76,663.86

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Solution

The fourth proportional to 140,337.78, 193,659.09 and 76,663.86 is: 105,792.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,337.78 : 193,659.09 = 76,663.86 : x
  2. Step 2: Convert to fraction form
    140,337.78/193,659.09 = 76,663.86/x
  3. Step 3: Cross multiply
    140,337.78x = 193,659.09 × 76,663.86
  4. Step 4: Simplify right side
    140,337.78x = 14,846,653,363.49
  5. Step 5: Solve for x
    x = 14,846,653,363.49/140,337.78
  6. Step 6: Final answer
    x = 105,792.28

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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.