Home / 120,555.18-166,365.33-66,840.21

Finding the Fourth Proportional to 120,555.18, 166,365.33 and 66,840.21

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Solution

The fourth proportional to 120,555.18, 166,365.33 and 66,840.21 is: 92,239.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,555.18 : 166,365.33 = 66,840.21 : x
  2. Step 2: Convert to fraction form
    120,555.18/166,365.33 = 66,840.21/x
  3. Step 3: Cross multiply
    120,555.18x = 166,365.33 × 66,840.21
  4. Step 4: Simplify right side
    120,555.18x = 11,119,893,593.92
  5. Step 5: Solve for x
    x = 11,119,893,593.92/120,555.18
  6. Step 6: Final answer
    x = 92,239.04

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1.5x scale

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.