Home / 102,006.82-140,764.53-56,687.86

Finding the Fourth Proportional to 102,006.82, 140,764.53 and 56,687.86

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Solution

The fourth proportional to 102,006.82, 140,764.53 and 56,687.86 is: 78,226.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,006.82 : 140,764.53 = 56,687.86 : x
  2. Step 2: Convert to fraction form
    102,006.82/140,764.53 = 56,687.86/x
  3. Step 3: Cross multiply
    102,006.82x = 140,764.53 × 56,687.86
  4. Step 4: Simplify right side
    102,006.82x = 7,979,639,969.61
  5. Step 5: Solve for x
    x = 7,979,639,969.61/102,006.82
  6. Step 6: Final answer
    x = 78,226.53

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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.