Home / 120,439.61-166,208.00-66,725.47

Finding the Fourth Proportional to 120,439.61, 166,208.00 and 66,725.47

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Solution

The fourth proportional to 120,439.61, 166,208.00 and 66,725.47 is: 92,081.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,439.61 : 166,208.00 = 66,725.47 : x
  2. Step 2: Convert to fraction form
    120,439.61/166,208.00 = 66,725.47/x
  3. Step 3: Cross multiply
    120,439.61x = 166,208.00 × 66,725.47
  4. Step 4: Simplify right side
    120,439.61x = 11,090,306,584.13
  5. Step 5: Solve for x
    x = 11,090,306,584.13/120,439.61
  6. Step 6: Final answer
    x = 92,081.89

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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.