Home / 120,302.72-166,013.52-66,587.84

Finding the Fourth Proportional to 120,302.72, 166,013.52 and 66,587.84

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Solution

The fourth proportional to 120,302.72, 166,013.52 and 66,587.84 is: 91,888.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,302.72 : 166,013.52 = 66,587.84 : x
  2. Step 2: Convert to fraction form
    120,302.72/166,013.52 = 66,587.84/x
  3. Step 3: Cross multiply
    120,302.72x = 166,013.52 × 66,587.84
  4. Step 4: Simplify right side
    120,302.72x = 11,054,481,707.60
  5. Step 5: Solve for x
    x = 11,054,481,707.60/120,302.72
  6. Step 6: Final answer
    x = 91,888.88

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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.