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Finding the Fourth Proportional to 120,309.70, 180,464.55 and 92,316.10

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Solution

The fourth proportional to 120,309.70, 180,464.55 and 92,316.10 is: 138,474.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,309.70 : 180,464.55 = 92,316.10 : x
  2. Step 2: Convert to fraction form
    120,309.70/180,464.55 = 92,316.10/x
  3. Step 3: Cross multiply
    120,309.70x = 180,464.55 × 92,316.10
  4. Step 4: Simplify right side
    120,309.70x = 16,659,783,444.26
  5. Step 5: Solve for x
    x = 16,659,783,444.26/120,309.70
  6. Step 6: Final answer
    x = 138,474.15

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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.