Home / 151,431.41-208,975.40-82,520.40

Finding the Fourth Proportional to 151,431.41, 208,975.40 and 82,520.40

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Solution

The fourth proportional to 151,431.41, 208,975.40 and 82,520.40 is: 113,878.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,431.41 : 208,975.40 = 82,520.40 : x
  2. Step 2: Convert to fraction form
    151,431.41/208,975.40 = 82,520.40/x
  3. Step 3: Cross multiply
    151,431.41x = 208,975.40 × 82,520.40
  4. Step 4: Simplify right side
    151,431.41x = 17,244,733,185.56
  5. Step 5: Solve for x
    x = 17,244,733,185.56/151,431.41
  6. Step 6: Final answer
    x = 113,878.18

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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.