Home / 100,860.45-151,314.37-56,517.81

Finding the Fourth Proportional to 100,860.45, 151,314.37 and 56,517.81

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Solution

The fourth proportional to 100,860.45, 151,314.37 and 56,517.81 is: 84,789.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,860.45 : 151,314.37 = 56,517.81 : x
  2. Step 2: Convert to fraction form
    100,860.45/151,314.37 = 56,517.81/x
  3. Step 3: Cross multiply
    100,860.45x = 151,314.37 × 56,517.81
  4. Step 4: Simplify right side
    100,860.45x = 8,551,956,813.93
  5. Step 5: Solve for x
    x = 8,551,956,813.93/100,860.45
  6. Step 6: Final answer
    x = 84,789.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.