Home / 139,530.80-209,169.61-50,721.58

Finding the Fourth Proportional to 139,530.80, 209,169.61 and 50,721.58

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Solution

The fourth proportional to 139,530.80, 209,169.61 and 50,721.58 is: 76,036.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,530.80 : 209,169.61 = 50,721.58 : x
  2. Step 2: Convert to fraction form
    139,530.80/209,169.61 = 50,721.58/x
  3. Step 3: Cross multiply
    139,530.80x = 209,169.61 × 50,721.58
  4. Step 4: Simplify right side
    139,530.80x = 10,609,413,107.18
  5. Step 5: Solve for x
    x = 10,609,413,107.18/139,530.80
  6. Step 6: Final answer
    x = 76,036.35

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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.