Home / 120,347.09-166,106.87-80,062.55

Finding the Fourth Proportional to 120,347.09, 166,106.87 and 80,062.55

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Solution

The fourth proportional to 120,347.09, 166,106.87 and 80,062.55 is: 110,504.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,347.09 : 166,106.87 = 80,062.55 : x
  2. Step 2: Convert to fraction form
    120,347.09/166,106.87 = 80,062.55/x
  3. Step 3: Cross multiply
    120,347.09x = 166,106.87 × 80,062.55
  4. Step 4: Simplify right side
    120,347.09x = 13,298,939,584.72
  5. Step 5: Solve for x
    x = 13,298,939,584.72/120,347.09
  6. Step 6: Final answer
    x = 110,504.87

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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.