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Finding the Fourth Proportional to 120,627.60, 180,924.66 and 84,494.64

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Solution

The fourth proportional to 120,627.60, 180,924.66 and 84,494.64 is: 126,730.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,627.60 : 180,924.66 = 84,494.64 : x
  2. Step 2: Convert to fraction form
    120,627.60/180,924.66 = 84,494.64/x
  3. Step 3: Cross multiply
    120,627.60x = 180,924.66 × 84,494.64
  4. Step 4: Simplify right side
    120,627.60x = 15,287,164,013.82
  5. Step 5: Solve for x
    x = 15,287,164,013.82/120,627.60
  6. Step 6: Final answer
    x = 126,730.23

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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.