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Finding the Fourth Proportional to 120,113.60, 179,924.40 and 67,412.40

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Solution

The fourth proportional to 120,113.60, 179,924.40 and 67,412.40 is: 100,980.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,113.60 : 179,924.40 = 67,412.40 : x
  2. Step 2: Convert to fraction form
    120,113.60/179,924.40 = 67,412.40/x
  3. Step 3: Cross multiply
    120,113.60x = 179,924.40 × 67,412.40
  4. Step 4: Simplify right side
    120,113.60x = 12,129,135,622.56
  5. Step 5: Solve for x
    x = 12,129,135,622.56/120,113.60
  6. Step 6: Final answer
    x = 100,980.54

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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.