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Finding the Fourth Proportional to 132,081.60, 197,863.20 and 79,334.40

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Solution

The fourth proportional to 132,081.60, 197,863.20 and 79,334.40 is: 118,845.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,081.60 : 197,863.20 = 79,334.40 : x
  2. Step 2: Convert to fraction form
    132,081.60/197,863.20 = 79,334.40/x
  3. Step 3: Cross multiply
    132,081.60x = 197,863.20 × 79,334.40
  4. Step 4: Simplify right side
    132,081.60x = 15,697,358,254.08
  5. Step 5: Solve for x
    x = 15,697,358,254.08/132,081.60
  6. Step 6: Final answer
    x = 118,845.91

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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.