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Finding the Fourth Proportional to 120,765.40, 166,648.54 and 67,050.40

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Solution

The fourth proportional to 120,765.40, 166,648.54 and 67,050.40 is: 92,525.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,765.40 : 166,648.54 = 67,050.40 : x
  2. Step 2: Convert to fraction form
    120,765.40/166,648.54 = 67,050.40/x
  3. Step 3: Cross multiply
    120,765.40x = 166,648.54 × 67,050.40
  4. Step 4: Simplify right side
    120,765.40x = 11,173,851,120.35
  5. Step 5: Solve for x
    x = 11,173,851,120.35/120,765.40
  6. Step 6: Final answer
    x = 92,525.27

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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.