Home / 145,865.78-218,711.20-57,013.44

Finding the Fourth Proportional to 145,865.78, 218,711.20 and 57,013.44

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Solution

The fourth proportional to 145,865.78, 218,711.20 and 57,013.44 is: 85,485.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,865.78 : 218,711.20 = 57,013.44 : x
  2. Step 2: Convert to fraction form
    145,865.78/218,711.20 = 57,013.44/x
  3. Step 3: Cross multiply
    145,865.78x = 218,711.20 × 57,013.44
  4. Step 4: Simplify right side
    145,865.78x = 12,469,477,878.53
  5. Step 5: Solve for x
    x = 12,469,477,878.53/145,865.78
  6. Step 6: Final answer
    x = 85,485.97

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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.