Home / 120,851.48-166,788.12-73,131.08

Finding the Fourth Proportional to 120,851.48, 166,788.12 and 73,131.08

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Solution

The fourth proportional to 120,851.48, 166,788.12 and 73,131.08 is: 100,928.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,851.48 : 166,788.12 = 73,131.08 : x
  2. Step 2: Convert to fraction form
    120,851.48/166,788.12 = 73,131.08/x
  3. Step 3: Cross multiply
    120,851.48x = 166,788.12 × 73,131.08
  4. Step 4: Simplify right side
    120,851.48x = 12,197,395,346.77
  5. Step 5: Solve for x
    x = 12,197,395,346.77/120,851.48
  6. Step 6: Final answer
    x = 100,928.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.