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Finding the Fourth Proportional to 117,571.50, 162,295.17 and 81,782.28

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Solution

The fourth proportional to 117,571.50, 162,295.17 and 81,782.28 is: 112,891.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,571.50 : 162,295.17 = 81,782.28 : x
  2. Step 2: Convert to fraction form
    117,571.50/162,295.17 = 81,782.28/x
  3. Step 3: Cross multiply
    117,571.50x = 162,295.17 × 81,782.28
  4. Step 4: Simplify right side
    117,571.50x = 13,272,869,035.59
  5. Step 5: Solve for x
    x = 13,272,869,035.59/117,571.50
  6. Step 6: Final answer
    x = 112,891.89

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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.