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Finding the Fourth Proportional to 140,550.86, 210,919.63 and 65,676.79

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Solution

The fourth proportional to 140,550.86, 210,919.63 and 65,676.79 is: 98,558.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,550.86 : 210,919.63 = 65,676.79 : x
  2. Step 2: Convert to fraction form
    140,550.86/210,919.63 = 65,676.79/x
  3. Step 3: Cross multiply
    140,550.86x = 210,919.63 × 65,676.79
  4. Step 4: Simplify right side
    140,550.86x = 13,852,523,856.25
  5. Step 5: Solve for x
    x = 13,852,523,856.25/140,550.86
  6. Step 6: Final answer
    x = 98,558.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.