Home / 201,569.42-278,162.20-109,685.57

Finding the Fourth Proportional to 201,569.42, 278,162.20 and 109,685.57

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Solution

The fourth proportional to 201,569.42, 278,162.20 and 109,685.57 is: 151,364.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,569.42 : 278,162.20 = 109,685.57 : x
  2. Step 2: Convert to fraction form
    201,569.42/278,162.20 = 109,685.57/x
  3. Step 3: Cross multiply
    201,569.42x = 278,162.20 × 109,685.57
  4. Step 4: Simplify right side
    201,569.42x = 30,510,379,185.24
  5. Step 5: Solve for x
    x = 30,510,379,185.24/201,569.42
  6. Step 6: Final answer
    x = 151,364.13

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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.