Home / 120,905.61-166,849.11-66,459.03

Finding the Fourth Proportional to 120,905.61, 166,849.11 and 66,459.03

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Solution

The fourth proportional to 120,905.61, 166,849.11 and 66,459.03 is: 91,713.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,905.61 : 166,849.11 = 66,459.03 : x
  2. Step 2: Convert to fraction form
    120,905.61/166,849.11 = 66,459.03/x
  3. Step 3: Cross multiply
    120,905.61x = 166,849.11 × 66,459.03
  4. Step 4: Simplify right side
    120,905.61x = 11,088,630,006.96
  5. Step 5: Solve for x
    x = 11,088,630,006.96/120,905.61
  6. Step 6: Final answer
    x = 91,713.11

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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.