Home / 120,909.12-166,848.80-67,197.76

Finding the Fourth Proportional to 120,909.12, 166,848.80 and 67,197.76

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Solution

The fourth proportional to 120,909.12, 166,848.80 and 67,197.76 is: 92,729.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,909.12 : 166,848.80 = 67,197.76 : x
  2. Step 2: Convert to fraction form
    120,909.12/166,848.80 = 67,197.76/x
  3. Step 3: Cross multiply
    120,909.12x = 166,848.80 × 67,197.76
  4. Step 4: Simplify right side
    120,909.12x = 11,211,865,618.69
  5. Step 5: Solve for x
    x = 11,211,865,618.69/120,909.12
  6. Step 6: Final answer
    x = 92,729.69

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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.