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Finding the Fourth Proportional to 132,545.80, 198,745.80 and 57,653.20

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Solution

The fourth proportional to 132,545.80, 198,745.80 and 57,653.20 is: 86,448.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,545.80 : 198,745.80 = 57,653.20 : x
  2. Step 2: Convert to fraction form
    132,545.80/198,745.80 = 57,653.20/x
  3. Step 3: Cross multiply
    132,545.80x = 198,745.80 × 57,653.20
  4. Step 4: Simplify right side
    132,545.80x = 11,458,331,356.56
  5. Step 5: Solve for x
    x = 11,458,331,356.56/132,545.80
  6. Step 6: Final answer
    x = 86,448.09

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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.