Home / 120,385.04-166,118.72-66,668.64

Finding the Fourth Proportional to 120,385.04, 166,118.72 and 66,668.64

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Solution

The fourth proportional to 120,385.04, 166,118.72 and 66,668.64 is: 91,995.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,385.04 : 166,118.72 = 66,668.64 : x
  2. Step 2: Convert to fraction form
    120,385.04/166,118.72 = 66,668.64/x
  3. Step 3: Cross multiply
    120,385.04x = 166,118.72 × 66,668.64
  4. Step 4: Simplify right side
    120,385.04x = 11,074,909,140.94
  5. Step 5: Solve for x
    x = 11,074,909,140.94/120,385.04
  6. Step 6: Final answer
    x = 91,995.73

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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.