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Finding the Fourth Proportional to 145,843.20, 218,789.10 and 57,099.60

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Solution

The fourth proportional to 145,843.20, 218,789.10 and 57,099.60 is: 85,658.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,843.20 : 218,789.10 = 57,099.60 : x
  2. Step 2: Convert to fraction form
    145,843.20/218,789.10 = 57,099.60/x
  3. Step 3: Cross multiply
    145,843.20x = 218,789.10 × 57,099.60
  4. Step 4: Simplify right side
    145,843.20x = 12,492,770,094.36
  5. Step 5: Solve for x
    x = 12,492,770,094.36/145,843.20
  6. Step 6: Final answer
    x = 85,658.91

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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.