Home / 120,858.06-166,775.00-67,138.50

Finding the Fourth Proportional to 120,858.06, 166,775.00 and 67,138.50

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Solution

The fourth proportional to 120,858.06, 166,775.00 and 67,138.50 is: 92,646.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,858.06 : 166,775.00 = 67,138.50 : x
  2. Step 2: Convert to fraction form
    120,858.06/166,775.00 = 67,138.50/x
  3. Step 3: Cross multiply
    120,858.06x = 166,775.00 × 67,138.50
  4. Step 4: Simplify right side
    120,858.06x = 11,197,023,001.81
  5. Step 5: Solve for x
    x = 11,197,023,001.81/120,858.06
  6. Step 6: Final answer
    x = 92,646.06

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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.