Home / 107,989.80-161,984.70-51,820.35

Finding the Fourth Proportional to 107,989.80, 161,984.70 and 51,820.35

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Solution

The fourth proportional to 107,989.80, 161,984.70 and 51,820.35 is: 77,730.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,989.80 : 161,984.70 = 51,820.35 : x
  2. Step 2: Convert to fraction form
    107,989.80/161,984.70 = 51,820.35/x
  3. Step 3: Cross multiply
    107,989.80x = 161,984.70 × 51,820.35
  4. Step 4: Simplify right side
    107,989.80x = 8,394,103,848.65
  5. Step 5: Solve for x
    x = 8,394,103,848.65/107,989.80
  6. Step 6: Final answer
    x = 77,730.53

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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.