Home / 139,947.48-209,912.58-56,839.32

Finding the Fourth Proportional to 139,947.48, 209,912.58 and 56,839.32

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Solution

The fourth proportional to 139,947.48, 209,912.58 and 56,839.32 is: 85,255.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,947.48 : 209,912.58 = 56,839.32 : x
  2. Step 2: Convert to fraction form
    139,947.48/209,912.58 = 56,839.32/x
  3. Step 3: Cross multiply
    139,947.48x = 209,912.58 × 56,839.32
  4. Step 4: Simplify right side
    139,947.48x = 11,931,288,306.65
  5. Step 5: Solve for x
    x = 11,931,288,306.65/139,947.48
  6. Step 6: Final answer
    x = 85,255.47

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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.