Home / 139,387.46-209,007.08-55,144.22

Finding the Fourth Proportional to 139,387.46, 209,007.08 and 55,144.22

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Solution

The fourth proportional to 139,387.46, 209,007.08 and 55,144.22 is: 82,687.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,387.46 : 209,007.08 = 55,144.22 : x
  2. Step 2: Convert to fraction form
    139,387.46/209,007.08 = 55,144.22/x
  3. Step 3: Cross multiply
    139,387.46x = 209,007.08 × 55,144.22
  4. Step 4: Simplify right side
    139,387.46x = 11,525,532,125.36
  5. Step 5: Solve for x
    x = 11,525,532,125.36/139,387.46
  6. Step 6: Final answer
    x = 82,687.01

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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.