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Finding the Fourth Proportional to 120,709.56, 166,593.95 and 69,722.24

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Solution

The fourth proportional to 120,709.56, 166,593.95 and 69,722.24 is: 96,225.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,709.56 : 166,593.95 = 69,722.24 : x
  2. Step 2: Convert to fraction form
    120,709.56/166,593.95 = 69,722.24/x
  3. Step 3: Cross multiply
    120,709.56x = 166,593.95 × 69,722.24
  4. Step 4: Simplify right side
    120,709.56x = 11,615,302,434.16
  5. Step 5: Solve for x
    x = 11,615,302,434.16/120,709.56
  6. Step 6: Final answer
    x = 96,225.20

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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.