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Finding the Fourth Proportional to 120,800.88, 166,707 and 73,045.80

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Solution

The fourth proportional to 120,800.88, 166,707 and 73,045.80 is: 100,804.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,800.88 : 166,707 = 73,045.80 : x
  2. Step 2: Convert to fraction form
    120,800.88/166,707 = 73,045.80/x
  3. Step 3: Cross multiply
    120,800.88x = 166,707 × 73,045.80
  4. Step 4: Simplify right side
    120,800.88x = 12,177,246,180.60
  5. Step 5: Solve for x
    x = 12,177,246,180.60/120,800.88
  6. Step 6: Final answer
    x = 100,804.28

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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.