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Finding the Fourth Proportional to 136,586.80, 204,880.20 and 83,442.70

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Solution

The fourth proportional to 136,586.80, 204,880.20 and 83,442.70 is: 125,164.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,586.80 : 204,880.20 = 83,442.70 : x
  2. Step 2: Convert to fraction form
    136,586.80/204,880.20 = 83,442.70/x
  3. Step 3: Cross multiply
    136,586.80x = 204,880.20 × 83,442.70
  4. Step 4: Simplify right side
    136,586.80x = 17,095,757,064.54
  5. Step 5: Solve for x
    x = 17,095,757,064.54/136,586.80
  6. Step 6: Final answer
    x = 125,164.05

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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.