Home / 139,829.76-209,761.92-51,125.04

Finding the Fourth Proportional to 139,829.76, 209,761.92 and 51,125.04

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Solution

The fourth proportional to 139,829.76, 209,761.92 and 51,125.04 is: 76,693.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,829.76 : 209,761.92 = 51,125.04 : x
  2. Step 2: Convert to fraction form
    139,829.76/209,761.92 = 51,125.04/x
  3. Step 3: Cross multiply
    139,829.76x = 209,761.92 × 51,125.04
  4. Step 4: Simplify right side
    139,829.76x = 10,724,086,550.48
  5. Step 5: Solve for x
    x = 10,724,086,550.48/139,829.76
  6. Step 6: Final answer
    x = 76,693.88

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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.