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Finding the Fourth Proportional to 120,655.89, 166,513.02 and 69,670.79

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Solution

The fourth proportional to 120,655.89, 166,513.02 and 69,670.79 is: 96,150.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,655.89 : 166,513.02 = 69,670.79 : x
  2. Step 2: Convert to fraction form
    120,655.89/166,513.02 = 69,670.79/x
  3. Step 3: Cross multiply
    120,655.89x = 166,513.02 × 69,670.79
  4. Step 4: Simplify right side
    120,655.89x = 11,601,092,816.12
  5. Step 5: Solve for x
    x = 11,601,092,816.12/120,655.89
  6. Step 6: Final answer
    x = 96,150.24

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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.