Home / 102,005.74-140,765.08-56,682.54

Finding the Fourth Proportional to 102,005.74, 140,765.08 and 56,682.54

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Solution

The fourth proportional to 102,005.74, 140,765.08 and 56,682.54 is: 78,220.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,005.74 : 140,765.08 = 56,682.54 : x
  2. Step 2: Convert to fraction form
    102,005.74/140,765.08 = 56,682.54/x
  3. Step 3: Cross multiply
    102,005.74x = 140,765.08 × 56,682.54
  4. Step 4: Simplify right side
    102,005.74x = 7,978,922,277.70
  5. Step 5: Solve for x
    x = 7,978,922,277.70/102,005.74
  6. Step 6: Final answer
    x = 78,220.33

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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.