Home / 120,459.65-166,234.16-66,748.15

Finding the Fourth Proportional to 120,459.65, 166,234.16 and 66,748.15

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Solution

The fourth proportional to 120,459.65, 166,234.16 and 66,748.15 is: 92,112.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,459.65 : 166,234.16 = 66,748.15 : x
  2. Step 2: Convert to fraction form
    120,459.65/166,234.16 = 66,748.15/x
  3. Step 3: Cross multiply
    120,459.65x = 166,234.16 × 66,748.15
  4. Step 4: Simplify right side
    120,459.65x = 11,095,821,481.89
  5. Step 5: Solve for x
    x = 11,095,821,481.89/120,459.65
  6. Step 6: Final answer
    x = 92,112.35

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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.