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Finding the Fourth Proportional to 120,887.55, 166,777.07 and 69,890.94

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Solution

The fourth proportional to 120,887.55, 166,777.07 and 69,890.94 is: 96,421.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,887.55 : 166,777.07 = 69,890.94 : x
  2. Step 2: Convert to fraction form
    120,887.55/166,777.07 = 69,890.94/x
  3. Step 3: Cross multiply
    120,887.55x = 166,777.07 × 69,890.94
  4. Step 4: Simplify right side
    120,887.55x = 11,656,205,843.29
  5. Step 5: Solve for x
    x = 11,656,205,843.29/120,887.55
  6. Step 6: Final answer
    x = 96,421.89

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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.