Home / 120,886.80-166,776.03-69,890.19

Finding the Fourth Proportional to 120,886.80, 166,776.03 and 69,890.19

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Solution

The fourth proportional to 120,886.80, 166,776.03 and 69,890.19 is: 96,420.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,886.80 : 166,776.03 = 69,890.19 : x
  2. Step 2: Convert to fraction form
    120,886.80/166,776.03 = 69,890.19/x
  3. Step 3: Cross multiply
    120,886.80x = 166,776.03 × 69,890.19
  4. Step 4: Simplify right side
    120,886.80x = 11,656,008,424.15
  5. Step 5: Solve for x
    x = 11,656,008,424.15/120,886.80
  6. Step 6: Final answer
    x = 96,420.85

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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.