Home / 151,121.39-208,543.33-82,208.57

Finding the Fourth Proportional to 151,121.39, 208,543.33 and 82,208.57

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Solution

The fourth proportional to 151,121.39, 208,543.33 and 82,208.57 is: 113,445.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,121.39 : 208,543.33 = 82,208.57 : x
  2. Step 2: Convert to fraction form
    151,121.39/208,543.33 = 82,208.57/x
  3. Step 3: Cross multiply
    151,121.39x = 208,543.33 × 82,208.57
  4. Step 4: Simplify right side
    151,121.39x = 17,144,047,694.10
  5. Step 5: Solve for x
    x = 17,144,047,694.10/151,121.39
  6. Step 6: Final answer
    x = 113,445.54

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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.