Home / 100,723.44-139,005.18-66,673.29

Finding the Fourth Proportional to 100,723.44, 139,005.18 and 66,673.29

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Solution

The fourth proportional to 100,723.44, 139,005.18 and 66,673.29 is: 92,013.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,723.44 : 139,005.18 = 66,673.29 : x
  2. Step 2: Convert to fraction form
    100,723.44/139,005.18 = 66,673.29/x
  3. Step 3: Cross multiply
    100,723.44x = 139,005.18 × 66,673.29
  4. Step 4: Simplify right side
    100,723.44x = 9,267,932,677.64
  5. Step 5: Solve for x
    x = 9,267,932,677.64/100,723.44
  6. Step 6: Final answer
    x = 92,013.66

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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.