Home / 68,128.82-102,193.14-21,385.34

Finding the Fourth Proportional to 68,128.82, 102,193.14 and 21,385.34

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Solution

The fourth proportional to 68,128.82, 102,193.14 and 21,385.34 is: 32,077.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,128.82 : 102,193.14 = 21,385.34 : x
  2. Step 2: Convert to fraction form
    68,128.82/102,193.14 = 21,385.34/x
  3. Step 3: Cross multiply
    68,128.82x = 102,193.14 × 21,385.34
  4. Step 4: Simplify right side
    68,128.82x = 2,185,435,044.57
  5. Step 5: Solve for x
    x = 2,185,435,044.57/68,128.82
  6. Step 6: Final answer
    x = 32,077.98

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1.5x scale

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.