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Finding the Fourth Proportional to 120,765.42, 166,622.43 and 75,489.46

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Solution

The fourth proportional to 120,765.42, 166,622.43 and 75,489.46 is: 104,154.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,765.42 : 166,622.43 = 75,489.46 : x
  2. Step 2: Convert to fraction form
    120,765.42/166,622.43 = 75,489.46/x
  3. Step 3: Cross multiply
    120,765.42x = 166,622.43 × 75,489.46
  4. Step 4: Simplify right side
    120,765.42x = 12,578,237,264.59
  5. Step 5: Solve for x
    x = 12,578,237,264.59/120,765.42
  6. Step 6: Final answer
    x = 104,154.30

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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.