Home / 120,742.86-166,738.62-77,797.74

Finding the Fourth Proportional to 120,742.86, 166,738.62 and 77,797.74

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Solution

The fourth proportional to 120,742.86, 166,738.62 and 77,797.74 is: 107,433.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,742.86 : 166,738.62 = 77,797.74 : x
  2. Step 2: Convert to fraction form
    120,742.86/166,738.62 = 77,797.74/x
  3. Step 3: Cross multiply
    120,742.86x = 166,738.62 × 77,797.74
  4. Step 4: Simplify right side
    120,742.86x = 12,971,887,806.72
  5. Step 5: Solve for x
    x = 12,971,887,806.72/120,742.86
  6. Step 6: Final answer
    x = 107,433.99

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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.