Home / 100,869.78-151,329-30,744.84

Finding the Fourth Proportional to 100,869.78, 151,329 and 30,744.84

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Solution

The fourth proportional to 100,869.78, 151,329 and 30,744.84 is: 46,124.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,869.78 : 151,329 = 30,744.84 : x
  2. Step 2: Convert to fraction form
    100,869.78/151,329 = 30,744.84/x
  3. Step 3: Cross multiply
    100,869.78x = 151,329 × 30,744.84
  4. Step 4: Simplify right side
    100,869.78x = 4,652,585,892.36
  5. Step 5: Solve for x
    x = 4,652,585,892.36/100,869.78
  6. Step 6: Final answer
    x = 46,124.68

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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.