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Finding the Fourth Proportional to 192,855.60, 289,302.42 and 66,479.20

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Solution

The fourth proportional to 192,855.60, 289,302.42 and 66,479.20 is: 99,725.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,855.60 : 289,302.42 = 66,479.20 : x
  2. Step 2: Convert to fraction form
    192,855.60/289,302.42 = 66,479.20/x
  3. Step 3: Cross multiply
    192,855.60x = 289,302.42 × 66,479.20
  4. Step 4: Simplify right side
    192,855.60x = 19,232,594,592.59
  5. Step 5: Solve for x
    x = 19,232,594,592.59/192,855.60
  6. Step 6: Final answer
    x = 99,725.36

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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.