Home / 120,615.20-166,459.18-66,917.50

Finding the Fourth Proportional to 120,615.20, 166,459.18 and 66,917.50

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Solution

The fourth proportional to 120,615.20, 166,459.18 and 66,917.50 is: 92,351.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,615.20 : 166,459.18 = 66,917.50 : x
  2. Step 2: Convert to fraction form
    120,615.20/166,459.18 = 66,917.50/x
  3. Step 3: Cross multiply
    120,615.20x = 166,459.18 × 66,917.50
  4. Step 4: Simplify right side
    120,615.20x = 11,139,032,177.65
  5. Step 5: Solve for x
    x = 11,139,032,177.65/120,615.20
  6. Step 6: Final answer
    x = 92,351.81

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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.