Home / 120,849.83-166,792.74-100,674.76

Finding the Fourth Proportional to 120,849.83, 166,792.74 and 100,674.76

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Solution

The fourth proportional to 120,849.83, 166,792.74 and 100,674.76 is: 138,947.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,849.83 : 166,792.74 = 100,674.76 : x
  2. Step 2: Convert to fraction form
    120,849.83/166,792.74 = 100,674.76/x
  3. Step 3: Cross multiply
    120,849.83x = 166,792.74 × 100,674.76
  4. Step 4: Simplify right side
    120,849.83x = 16,791,819,069.24
  5. Step 5: Solve for x
    x = 16,791,819,069.24/120,849.83
  6. Step 6: Final answer
    x = 138,947.81

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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.