Home / 107,788.20-161,759.10-45,503.40

Finding the Fourth Proportional to 107,788.20, 161,759.10 and 45,503.40

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Solution

The fourth proportional to 107,788.20, 161,759.10 and 45,503.40 is: 68,287.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,788.20 : 161,759.10 = 45,503.40 : x
  2. Step 2: Convert to fraction form
    107,788.20/161,759.10 = 45,503.40/x
  3. Step 3: Cross multiply
    107,788.20x = 161,759.10 × 45,503.40
  4. Step 4: Simplify right side
    107,788.20x = 7,360,589,030.94
  5. Step 5: Solve for x
    x = 7,360,589,030.94/107,788.20
  6. Step 6: Final answer
    x = 68,287.52

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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.