Home / 120,530.94-166,317.40-66,815.48

Finding the Fourth Proportional to 120,530.94, 166,317.40 and 66,815.48

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Solution

The fourth proportional to 120,530.94, 166,317.40 and 66,815.48 is: 92,196.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,530.94 : 166,317.40 = 66,815.48 : x
  2. Step 2: Convert to fraction form
    120,530.94/166,317.40 = 66,815.48/x
  3. Step 3: Cross multiply
    120,530.94x = 166,317.40 × 66,815.48
  4. Step 4: Simplify right side
    120,530.94x = 11,112,577,412.66
  5. Step 5: Solve for x
    x = 11,112,577,412.66/120,530.94
  6. Step 6: Final answer
    x = 92,196.89

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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.