Home / 100,815.03-151,245.09-30,699.81

Finding the Fourth Proportional to 100,815.03, 151,245.09 and 30,699.81

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Solution

The fourth proportional to 100,815.03, 151,245.09 and 30,699.81 is: 46,056.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,815.03 : 151,245.09 = 30,699.81 : x
  2. Step 2: Convert to fraction form
    100,815.03/151,245.09 = 30,699.81/x
  3. Step 3: Cross multiply
    100,815.03x = 151,245.09 × 30,699.81
  4. Step 4: Simplify right side
    100,815.03x = 4,643,195,526.43
  5. Step 5: Solve for x
    x = 4,643,195,526.43/100,815.03
  6. Step 6: Final answer
    x = 46,056.58

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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.