Home / 123,640.47-185,458.68-39,399.50

Finding the Fourth Proportional to 123,640.47, 185,458.68 and 39,399.50

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Solution

The fourth proportional to 123,640.47, 185,458.68 and 39,399.50 is: 59,098.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,640.47 : 185,458.68 = 39,399.50 : x
  2. Step 2: Convert to fraction form
    123,640.47/185,458.68 = 39,399.50/x
  3. Step 3: Cross multiply
    123,640.47x = 185,458.68 × 39,399.50
  4. Step 4: Simplify right side
    123,640.47x = 7,306,979,726.31
  5. Step 5: Solve for x
    x = 7,306,979,726.31/123,640.47
  6. Step 6: Final answer
    x = 59,098.61

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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.