Home / 120,811.51-166,803.27-75,509.83

Finding the Fourth Proportional to 120,811.51, 166,803.27 and 75,509.83

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Solution

The fourth proportional to 120,811.51, 166,803.27 and 75,509.83 is: 104,255.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,811.51 : 166,803.27 = 75,509.83 : x
  2. Step 2: Convert to fraction form
    120,811.51/166,803.27 = 75,509.83/x
  3. Step 3: Cross multiply
    120,811.51x = 166,803.27 × 75,509.83
  4. Step 4: Simplify right side
    120,811.51x = 12,595,286,561.14
  5. Step 5: Solve for x
    x = 12,595,286,561.14/120,811.51
  6. Step 6: Final answer
    x = 104,255.68

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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.