Home / 139,128.48-208,661.04-39,299.04

Finding the Fourth Proportional to 139,128.48, 208,661.04 and 39,299.04

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Solution

The fourth proportional to 139,128.48, 208,661.04 and 39,299.04 is: 58,939.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,128.48 : 208,661.04 = 39,299.04 : x
  2. Step 2: Convert to fraction form
    139,128.48/208,661.04 = 39,299.04/x
  3. Step 3: Cross multiply
    139,128.48x = 208,661.04 × 39,299.04
  4. Step 4: Simplify right side
    139,128.48x = 8,200,178,557.40
  5. Step 5: Solve for x
    x = 8,200,178,557.40/139,128.48
  6. Step 6: Final answer
    x = 58,939.61

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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.