Home / 120,708.90-166,580.10-66,997.40

Finding the Fourth Proportional to 120,708.90, 166,580.10 and 66,997.40

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Solution

The fourth proportional to 120,708.90, 166,580.10 and 66,997.40 is: 92,457.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,708.90 : 166,580.10 = 66,997.40 : x
  2. Step 2: Convert to fraction form
    120,708.90/166,580.10 = 66,997.40/x
  3. Step 3: Cross multiply
    120,708.90x = 166,580.10 × 66,997.40
  4. Step 4: Simplify right side
    120,708.90x = 11,160,432,758.84
  5. Step 5: Solve for x
    x = 11,160,432,758.84/120,708.90
  6. Step 6: Final answer
    x = 92,457.41

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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.