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Finding the Fourth Proportional to 118,003.76, 162,858.30 and 72,672.80

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Solution

The fourth proportional to 118,003.76, 162,858.30 and 72,672.80 is: 100,296.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,003.76 : 162,858.30 = 72,672.80 : x
  2. Step 2: Convert to fraction form
    118,003.76/162,858.30 = 72,672.80/x
  3. Step 3: Cross multiply
    118,003.76x = 162,858.30 × 72,672.80
  4. Step 4: Simplify right side
    118,003.76x = 11,835,368,664.24
  5. Step 5: Solve for x
    x = 11,835,368,664.24/118,003.76
  6. Step 6: Final answer
    x = 100,296.54

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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.