Home / 102,067.76-140,845.50-56,742.98

Finding the Fourth Proportional to 102,067.76, 140,845.50 and 56,742.98

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Solution

The fourth proportional to 102,067.76, 140,845.50 and 56,742.98 is: 78,300.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,067.76 : 140,845.50 = 56,742.98 : x
  2. Step 2: Convert to fraction form
    102,067.76/140,845.50 = 56,742.98/x
  3. Step 3: Cross multiply
    102,067.76x = 140,845.50 × 56,742.98
  4. Step 4: Simplify right side
    102,067.76x = 7,991,992,685.36
  5. Step 5: Solve for x
    x = 7,991,992,685.36/102,067.76
  6. Step 6: Final answer
    x = 78,300.86

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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.