Home / 139,448.23-209,089.20-55,220.48

Finding the Fourth Proportional to 139,448.23, 209,089.20 and 55,220.48

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Solution

The fourth proportional to 139,448.23, 209,089.20 and 55,220.48 is: 82,797.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,448.23 : 209,089.20 = 55,220.48 : x
  2. Step 2: Convert to fraction form
    139,448.23/209,089.20 = 55,220.48/x
  3. Step 3: Cross multiply
    139,448.23x = 209,089.20 × 55,220.48
  4. Step 4: Simplify right side
    139,448.23x = 11,546,006,798.04
  5. Step 5: Solve for x
    x = 11,546,006,798.04/139,448.23
  6. Step 6: Final answer
    x = 82,797.80

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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.