Home / 120,849.58-166,792.40-100,674.51

Finding the Fourth Proportional to 120,849.58, 166,792.40 and 100,674.51

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Solution

The fourth proportional to 120,849.58, 166,792.40 and 100,674.51 is: 138,947.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,849.58 : 166,792.40 = 100,674.51 : x
  2. Step 2: Convert to fraction form
    120,849.58/166,792.40 = 100,674.51/x
  3. Step 3: Cross multiply
    120,849.58x = 166,792.40 × 100,674.51
  4. Step 4: Simplify right side
    120,849.58x = 16,791,743,141.72
  5. Step 5: Solve for x
    x = 16,791,743,141.72/120,849.58
  6. Step 6: Final answer
    x = 138,947.47

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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.