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Finding the Fourth Proportional to 117,221.76, 161,766.12 and 68,814.21

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Solution

The fourth proportional to 117,221.76, 161,766.12 and 68,814.21 is: 94,963.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,221.76 : 161,766.12 = 68,814.21 : x
  2. Step 2: Convert to fraction form
    117,221.76/161,766.12 = 68,814.21/x
  3. Step 3: Cross multiply
    117,221.76x = 161,766.12 × 68,814.21
  4. Step 4: Simplify right side
    117,221.76x = 11,131,807,752.57
  5. Step 5: Solve for x
    x = 11,131,807,752.57/117,221.76
  6. Step 6: Final answer
    x = 94,963.66

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1.5x scale

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.