Home / 102,005.43-140,764.74-56,682.29

Finding the Fourth Proportional to 102,005.43, 140,764.74 and 56,682.29

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Solution

The fourth proportional to 102,005.43, 140,764.74 and 56,682.29 is: 78,220.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,005.43 : 140,764.74 = 56,682.29 : x
  2. Step 2: Convert to fraction form
    102,005.43/140,764.74 = 56,682.29/x
  3. Step 3: Cross multiply
    102,005.43x = 140,764.74 × 56,682.29
  4. Step 4: Simplify right side
    102,005.43x = 7,978,867,110.63
  5. Step 5: Solve for x
    x = 7,978,867,110.63/102,005.43
  6. Step 6: Final answer
    x = 78,220.02

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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.