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Finding the Fourth Proportional to 120,862.32, 166,736.34 and 80,536.74

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Solution

The fourth proportional to 120,862.32, 166,736.34 and 80,536.74 is: 111,104.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,862.32 : 166,736.34 = 80,536.74 : x
  2. Step 2: Convert to fraction form
    120,862.32/166,736.34 = 80,536.74/x
  3. Step 3: Cross multiply
    120,862.32x = 166,736.34 × 80,536.74
  4. Step 4: Simplify right side
    120,862.32x = 13,428,401,263.13
  5. Step 5: Solve for x
    x = 13,428,401,263.13/120,862.32
  6. Step 6: Final answer
    x = 111,104.94

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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.