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Finding the Fourth Proportional to 120,591.52, 180,861.18 and 76,158.88

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Solution

The fourth proportional to 120,591.52, 180,861.18 and 76,158.88 is: 114,221.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,591.52 : 180,861.18 = 76,158.88 : x
  2. Step 2: Convert to fraction form
    120,591.52/180,861.18 = 76,158.88/x
  3. Step 3: Cross multiply
    120,591.52x = 180,861.18 × 76,158.88
  4. Step 4: Simplify right side
    120,591.52x = 13,774,184,904.28
  5. Step 5: Solve for x
    x = 13,774,184,904.28/120,591.52
  6. Step 6: Final answer
    x = 114,221.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.