Home / 149,636.48-206,491.03-81,649.40

Finding the Fourth Proportional to 149,636.48, 206,491.03 and 81,649.40

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Solution

The fourth proportional to 149,636.48, 206,491.03 and 81,649.40 is: 112,672.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,636.48 : 206,491.03 = 81,649.40 : x
  2. Step 2: Convert to fraction form
    149,636.48/206,491.03 = 81,649.40/x
  3. Step 3: Cross multiply
    149,636.48x = 206,491.03 × 81,649.40
  4. Step 4: Simplify right side
    149,636.48x = 16,859,867,468.30
  5. Step 5: Solve for x
    x = 16,859,867,468.30/149,636.48
  6. Step 6: Final answer
    x = 112,672.18

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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.