Home / 120,881.36-166,817.02-66,432.96

Finding the Fourth Proportional to 120,881.36, 166,817.02 and 66,432.96

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Solution

The fourth proportional to 120,881.36, 166,817.02 and 66,432.96 is: 91,677.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,881.36 : 166,817.02 = 66,432.96 : x
  2. Step 2: Convert to fraction form
    120,881.36/166,817.02 = 66,432.96/x
  3. Step 3: Cross multiply
    120,881.36x = 166,817.02 × 66,432.96
  4. Step 4: Simplify right side
    120,881.36x = 11,082,148,375.46
  5. Step 5: Solve for x
    x = 11,082,148,375.46/120,881.36
  6. Step 6: Final answer
    x = 91,677.89

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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.