Home / 120,849.12-166,776.51-82,688.70

Finding the Fourth Proportional to 120,849.12, 166,776.51 and 82,688.70

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Solution

The fourth proportional to 120,849.12, 166,776.51 and 82,688.70 is: 114,113.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,849.12 : 166,776.51 = 82,688.70 : x
  2. Step 2: Convert to fraction form
    120,849.12/166,776.51 = 82,688.70/x
  3. Step 3: Cross multiply
    120,849.12x = 166,776.51 × 82,688.70
  4. Step 4: Simplify right side
    120,849.12x = 13,790,532,802.44
  5. Step 5: Solve for x
    x = 13,790,532,802.44/120,849.12
  6. Step 6: Final answer
    x = 114,113.64

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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.