Home / 129,815.60-194,723.40-85,492.40

Finding the Fourth Proportional to 129,815.60, 194,723.40 and 85,492.40

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Solution

The fourth proportional to 129,815.60, 194,723.40 and 85,492.40 is: 128,238.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,815.60 : 194,723.40 = 85,492.40 : x
  2. Step 2: Convert to fraction form
    129,815.60/194,723.40 = 85,492.40/x
  3. Step 3: Cross multiply
    129,815.60x = 194,723.40 × 85,492.40
  4. Step 4: Simplify right side
    129,815.60x = 16,647,370,802.16
  5. Step 5: Solve for x
    x = 16,647,370,802.16/129,815.60
  6. Step 6: Final answer
    x = 128,238.60

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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.